TECHNICAL GLASS PRODUCTS, INC. 881 Callendar Blvd., Painesville Twp., Ohio 44077 PHONE: 440.639.6399 FAX: 440.639.1292 WEB: www.technicalglass.com EMAIL: tgp@tgpohio.com SEMICONDUCTOR WARE PAGE 29 Fused Quartz Tubing . . . . . . . . . . . . . . . . . . . . . .16 Fused Quartz Tubing for Compression Fittings . . . . . . . . 17 FUSED QUARTZ TUBING PAGES 16–17 Tubing Tolerances . . . . . . . . . . . . . . . . . . . . . . . 17 Fused Quartz Specialty Tubing . . . . . . . . . . . . . . . . 17 Specialty Quartz, Flat & Oval Tubing . . . . . . . . . . . . . 17 Specialty Quartz, Twin Tubes . . . . . . . . . . . . . . . . . 17 How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Specialty Quartz, Profiles & Bends . . . . . . . . . . . . . . 18 Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Specialty Quartz, Multi-hole Capillaries . . . . . . . . . . . . 18 About Our Company . . . . . . . . . . . . . . . . . . . . . . .6 Specialty Quartz, Square & Rectangular Tubing . . . . . . . 19 Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Specialty Quartz, Precision Bore Tubing . . . . . . . . . . . 19 Technical Information & Properties . . . . . . . . . . . . . . .8 Specialty Quartz, Colored Quartz Tubing . . . . . . . . . . . 20 Calculations, Formulas & Trace Impurities . . . . . . . . . . .9 Fused Quartz Transmittance Curves . . . . . . . . . . . . . . 10 Machined Quartz, Optical Properties . . . . . . . . . . . . . 11 Machined Quartz, Equipment, Material Available . . . . . . . 11 Machined Quartz, Specifications . . . . . . . . . . . . . . . 12 Standard Fused Quartz, Polished Plates & Discs . . . . . . . 13 Standard Fused Quartz, Microscope Slides & Cover Slips . . .13 Machined Quartz, Scratch / Dig Specifications . . . . . . . . . 14 Fused Quartz Rod . . . . . . . . . . . . . . . . . . . . . . . 15 FUSED QUARTZ ROD PAGE 15 2 FUSED QUARTZ LABWARE PAGES 21–25 Flat O-Ring Connectors . . . . . . . . . . . . . . . . . . . . 24 Ball O-Ring Joints . . . . . . . . . . . . . . . . . . . . . . . 24 FUSED QUARTZ WOOL & FRITS PAGES 30-31 Conical Pipe Flange . . . . . . . . . . . . . . . . . . . . . . 24 Standard Taper Joints . . . . . . . . . . . . . . . . . . . . . 25 Quartz Screwthreads & Caps . . . . . . . . . . . . . . . . . 25 Opaque Fused Quartz Properties . . . . . . . . . . . . . . . 26 Specialty Quartz, Fused Quartz Cylinders . . . . . . . . . . . 20 Opaque Labware & Trays . . . . . . . . . . . . . . . . . . . 27 Fused Quartz Labware . . . . . . . . . . . . . . . . . . . 21–25 Custom Design, Fabrication & Repair . . . . . . . . . . . . . 28 Evaporating Dishes . . . . . . . . . . . . . . . . . . . . . . 21 Semiconductor Ware . . . . . . . . . . . . . . . . . . . . . . 29 Round Dishes . . . . . . . . . . . . . . . . . . . . . . . . . 21 Fused Quartz Wool & Frits . . . . . . . . . . . . . . . . 30–31 Crucibles . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Fused Quartz Usage Guidelines . . . . . . . . . . . . . . . . 32 Graded Seals . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Test Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Stopcocks . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Boiling Flasks . . . . . . . . . . . . . . . . . . . . . . . . . 22 Distilling Flasks . . . . . . . . . . . . . . . . . . . . . . . . 22 Kjeldahl Flasks . . . . . . . . . . . . . . . . . . . . . . . . 22 Erlenmeyer Flasks . . . . . . . . . . . . . . . . . . . . . . . 23 Beakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Ball & Socket Joints . . . . . . . . . . . . . . . . . . . . . . 24 3 FUSED QUARTZ MICROSCOPE SLIDES PAGE 13 CUSTOM REQUIREMENTS For custom requirements, please contact our sales department located in our Painesville Twp., Ohio location. Our mailing address is: Technical Glass Products, Inc. 881 Callendar Blvd. Painesville Twp., OH 44077 BY PHONE Call our expert sales staff at 440.639.6399. BY FAX Fax your purchase order to us at 440.639.1292. BY EMAIL Email tgp@tgpohio.com ON THE WEB For standard items, we offer online ordering. Simply go to our website at www.technicalglass.com. Click on Order Online, Search Catalog, or on any item number link. METHOD OF PAYMENT We accept VISA, MasterCard, and American Express. We also offer Net 30 Day terms on company or university purchase orders with prior credit approval. Orders shipped outside of the U.S. and Canada will require payment prior to manufacturing and shipping. 4 TERMS AND CONDITIONS All purchase orders and shipments are subject to the terms and conditions listed below. Submission of an order to Technical Glass Products, Inc. is an acknowledgement that you have read, understand, and approve of these provisions. METHOD OF SHIPMENT TGP will ship via UPS unless otherwise indicated by the customer. UPS shipments will be prepaid and added to the invoice. (PP&A) FOB: Shipping point. (Customer takes ownership at our dock.) COMMON CARRIER If a shipment is too large for UPS, TGP will ship using the trucking company of the customer’s choice. All truck shipments will be shipped freight collect, FOB shipping point. EXPORT SHIPMENTS All export shipments will be FOB: EXWORKS Painesville, OH or Gonzales, LA. BREAKAGE Our expert shipping department takes every precaution to ensure that your parts will arrive intact. However, breakage sometimes occurs due to reasons beyond our control. If you should happen to receive a part that is damaged, please take the following steps: UPS shipments: Inspect all items for damage • Retain all packaging materials • Contact TGP immediately • Truck shipments: • Contact carrier immediately • Inspect all items for damage 5 Technical Glass Products, Inc., was founded in 1990 as a fabricator of Fused Quartz Glassware. Our commitment to excellence has resulted in TGP becoming America’s fastest growing supplier of stock shapes and fabricated products in the industry. Member Technical Glass Products is proud of its expertise, and we welcome the opportunity to supply all of your quartz needs. For prompt evaluation and quotation of your project, please contact us at 440.639.6399 or visit our website at www.technicalglass.com TGP has two manufacturing facilities, which allows us to maintain a broad inventory of labware, flat stock, rod and tubing. These items are all supported by the finest engineers, machinists and glass blowers in the industry. Therefore, we can strategically satisfy our customers’ requirements. We also excel in technical product assistance of all types including design, temperature ranges and purity level qualifications. Because of our state-of-the-art equipment and methods, we are capable of achieving the industry’s most stringent standards and tolerances. Our products are always fully guaranteed for workmanship and quality. 6 Technical Glass Products specializes in custom fabrication of fused quartz products to your exact specifications. From small diameter apparatus to large diameter furnace tubes and bell jars, our experienced craftsmen have decades of experience that enables us to exceed your expectations for quality. Along with custom items, Technical Glass manufactures a wide range of standard labware including: • Flasks • Beakers • Test Tubes • Crucibles • Dishes Technical Glass Products also offers a wide range of standard products for immediate shipment for your glassblowing needs: • Tubing • Rod • Solids* • Standard Taper Joints • Ball & Socket Joints • Flat O-ring Connectors • GL Threaded Tubes • Quartz Wool & Felt • Fritted Discs • Quartz to Pyrex Graded Seals Our headquarters, located in Painesville, Ohio, is an 11,000 square foot facility. It houses our sales office, Class 10000 cleanroom manufacturing area, and warehouse. Our second plant, in Gonzales, Louisiana, accommodates an additional 11,000 square feet of manufacturing and distribution space. We are known world wide for our quality, service and competitive pricing. We are world leaders in the fused quartz fabrication industry, and have the pleasure to be an authorized distributor and fabricator for a number of quartz raw material suppliers, including: Momentive Performance Materials (formerly GE Quartz) Philips • Heraeus • Qsil • • Our goal at TGP is not only to meet all of your quality, service and pricing expectations, but also to exceed those expectations and become the quartz fabricator and distributor of choice for your company. * Solids include Discs, Plates, Flanges and other custom machined parts Technical Glass Products has the pleasure to be an authorized distributor and fabricator of many quartz suppliers. 7 PROPERTIES OF FUSED QUARTZ Silica is found almost everywhere in nature, and represents almost 1/3 the mass of the earth’s crust. Vitreous Silica is the generic term used to describe all types of silica glass, and manufacturers refer to the material as either Fused Quartz or Fused Silica. Fused Quartz is manufactured by melting naturally occuring crystalline silica, such as sand or rock crystal. The production method is either electrically fused or flame fused. Afterward, items will appear transparent, translucent, or opaque; making it possible to create a wide range of products. Fused silica, commonly referred to as synthetic fused quartz, is produced using high purity silica sand that is manufactured PROPERTY Density Hardness Design Tensile Strength Design Compressive Strength Bulk Modulus Rigidity Modulus Young’s Modulus Poisson’s Ratio Coefficient of Thermal Expansion (20°C – 320°C) Thermal Conductivity (20°C) Specific Heat (20°) Softening Point Annealing Point Strain Point Electrical Resistivity (350°C) TYPICAL VALUES 2.2 x 103 kg/m3 5.5–6.5 Mohs’ Scale 570 KHN100 4.8 x 107 Pa (N/m2) (7,000 psi) > 1.1 x 109 Pa (160,000 psi) 3.7 x 1010 Pa (5.3 x 106 psi) 3.1 1010 Pa (4.5 x 106 psi) 7.2 x 1010 Pa (10.5 x 106 psi) 0.17 5.5 x 10-7 cm/cm °C 1.4 W/m °C 670 J/kg °C 1683°C 1215°C 1120°C 7 x 107 ohm cm from SiCL 4. The finished product’s appearance will be transparent. Vitreous Silica, in all its forms, offers a variety of properties such as: Permeability Extreme Hardness Very Low Coefficient of Thermal Expansion Resistance to High Temperature High Chemical Purity High Corrosion Resistance Extensive Optical Transmission from Ultra-Violet to Infra-Red Excellent Electrical Insulation Qualities Remarkable Stability Under Atomic Bombardment PROPERTY Dielectric Properties (20°C, 1 MHz) Constant Strength Loss Factor Dissipation Factor Index of Refraction Constringence (Nu value) Velocity of Sound-Shear Wave Velocity of Sound/ Compressional Wave Sonic Attenuation Permeability Constants (700°C) Helium Hydrogen Deutrium Neon TYPICAL VALUES 3.75 5 x 107 V/m < 4 x 10-4 < 1 x 10-4 1.4585 67.56 3.75 x 103 m/s 5.90 x 103 m/s < 11 dB/m MHz (cm3 mm/cm2 sec cm Hg) 210 x 10-10 21 x 10-10 17 x 10-10 9. 5 x 10-10 8 INTERNAL PRESSURE CALCULATIONS Because fused quartz is used in applications involving internal pressures, it is helpful to know the maximum pressure that can be applied to a selected fused quartz tube. The formula below can approximate this information at room temperature. In addition, there are helpful calculator applications available on our website at www.technicalglass.com. Look for the Toolbox and Book icons at technicalglass.com and choose an application from the menus below them. RUPTURE FORMULA FOR TUBING S = pr/t Where: S = Hoop Stress in Pa p = Working Pressure (Pa) r0 = Inside Radius (mm) t = Wall Thickness (mm) This formula cannot be used when internal pressure exceeds 100 psi. RUPTURE PRESSURE CALCULATIONS FOR DISCS AND PLATES Determining pressure differential is required for many applications of stressed fused quartz discs, plates and sight glasses. The formulas below can be used for room temperature applications of parts having either clamped or unclamped edges: A = Unsupported Area in sq/inches T = Thickness (inches) F = Safety Factor (7) M = Modulus of Rupture (7,000 psi) P = Pressure (psi) The above pressure calculations are recommendations only. Actual pressure points may vary depending on user applications. 9 TRACE IMPURITIES ELEMENT ( PPM ) ELECTRICALLY FUSED ELECTRICALLY FUSED TUBING AND ROD INGOT ( PPM ) ( PPM ) FLAME FUSED INGOT ( PPM ) FUSED SILICA FLAME FUSED ( PPB ) Ag — — — <2 Al 14 14 15 <25 As <.002 <.002 — <15 Au — — — <1 B <0.2 <0.2 — <10 Ba — — — <1 Be — — — <0.5 Bi — — — <0 Ca 0.4 0.4 0.5 <15 Cd <0.01 <0.01 — <0.3 Co — — — <0.5 Cr <0.05 0.05 <0.01 <1 Cu <0.05 <0.05 <0.01 <2 Fe 0.2 0.2 0.1 <20 Ga — — — <0.5 K 0.6 0.6 0.2 <5 Li 0.6 0.6 0.2 <7.2 Mg 0.1 0.1 — <5 Mn <0.05 <0.05 0.01 <1 Mo — — — <1 Na 0.7 0.7 0.1 <187 Nd — — 0.1 — Ni <0.1 <0.1 — <5 P <0.2 <0.2 — <50 Sb <0.003 <0.003 — <0.5 Sr — — — <0.5 Th — — — <0.5 Ti 1.1 1.1 1.3 <10 U — — — <1 V — — — <1 Y — — <0.1 — Zn — — — <5 Zr 0.8 0.8 1.3 <25 OH <5 <5 170 <1000 PPM The curves in the figure below represent the average transmissions for a 10mm thick test sample for both commercial and optical grades. Fused quartz is very efficient for the transmission of infrared radiation. Infrared transmission extends out approximately 4 micrometers, with little absorption in the “water band” at 2.73µm. FUSED QUARTZ AVERAGE TRANSMITTANCE CURVES Tubing Commercial Grade Fused Quartz Optical Grade Fused Quartz Fused Silica Fused Silica Optical Grade Commercial Grade Tubing 10 GRINDING, LAPPING, & POLISHING Technical Glass Products offers a variety of grinding, lapping and polishing services for a wide range of sizes, shapes and grades of Quartz and other glasses. Our machine capabilities include: • Grinding & Polishing to 28" diameter • O.D. Grinding to 24" diameter • Centerless Grinding up to 4" diameter • Milling Machines for special shapes EQUIPMENT & CAPABILITIES O.D. and I.D. Grinders Grinding & Polishing • Core Drilling • Cylindrical Polishing • Centerless Grinding • Custom Machining • Lapping / Grinding • Laser • • • Technical Glass Products manufactures to your specifications; offering all types of glass components in any quantities desired. OPTICAL PROPERTIES OF FUSED QUARTZ The optical properties of fused quartz allows you to choose between various types, because the degree of transparency defines material purity and the method of manufacture. Certain indicators are the UV cutoff and the presence or absence of bands at 245nm and 2.73µm. The UV cutoff varies from 155 to 175nm for a 10mm thick test sample. The presence of transition metallic impurities will move the UV cutoff towards longer wavelengths. 11 Pitch Polishing Wire Sawing • Surface Mills • Blanchards • Slicing Saws • Full CNC Capabilities • Boring • Water Jet • MATERIAL AVAILABLE Commercial Grade Fused Quartz Optical Grade Fused Quartz • Fused Silica • Opaque Fused Quartz • • SURFACE QUALITY – MIL SPEC.– PRF-13830B 80/50 SYMBOL CHARACTERISTICS SYMBOL CHARACTERISTIC Flatness Straightness Circularity (Roundness) Cylindricity Perpendicularity (Squareness) Angularity Parallelism Profile of a Surface Profile of a Line Cincular Runout Total Runout Position Concentricity Symmetry STANDARD TOLERANCE .005" .005" .010" .010" 1° 1° .005" .030" .020" .010" .010" .020" .010" .010" NOTE: These tolerances apply to machined ground only and mechanically polished parts only. TOLERANCE BLOCK: INCHES x. .x .xx .xxx ANGLE = ±.040 = ±.030 = ±.010 = ±.005 = ± 1° MILLIMETERS(mm) x. .x .xx .xxx ANGLE = ± 1 mm = ± .75 mm = ± .25 mm = ± .13 mm = ± 1° On inside sharp corners, R.125 preferred. Ex: Rectangular holes and corner contours. STANDARD SURFACE FINISHES (MICRO-INCH) N6 32 32 Rq (RMS) Diamond finish N5 16 √D 16 Rq (RMS) Diamond finish N4 9 √G 9 Rq (RMS) Ground finish N2 2 2 Rq (RMS) Ground & Polish finish N2 2 2 Rq (RMS) Flame Polish finish √D √MP √FP 12 Polished Plates & Discs Microscope Slides & Cover Slips STANDARD FUSED QUARTZ • POLISHED ITEMS GROUND & POLISHED PLATES GROUND & POLISHED DISCS LENGTH OF SIDES DIAMETER 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 4-1/2" 5" 5-1/2" 6" x x x x x x x x x x x x x 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 4-1/2" 5" 5-1/2" 6" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/2" 3" 3-1/2" 4" 4-1/2" 5" 5-1/2" 6" STANDARD THICKNESS: 1/16", 1/8", 1/4" Additional sizes available upon request. 13 STANDARD FUSED QUARTZ • POLISHED ITEMS MICROSCOPE SLIDES LENGTH COVER SLIPS WIDTH 1" 1" 2" 1" 3" 1" THICKNESS: 1mm 1" SQ. x .2 ±.05mm THICK 1" DIA. x .2 ±.05mm THICK TOLERANCES STANDARD* PLATE Length: Width: Thickness: ±.010" ±.010" ±.005" DISC Diameter: Thickness: ±.010" ±.005" * Special tolerances available. Radius: Bevel: Maximum Chip: Flatness: Parallelism: Scratch/Dig: STANDARD* .030"–.060" .020"–.040" <.020" within .00011" per inch within .005" 80/50 SCRATCH / DIG SPECIFICATIONS This parameter measures the allowable defects in a coating or on the surface of an optical element, and is specified as a numerical value. For example, a specification may read “Scratch/ Dig = 80/50”, explained as follows: SCRATCH DIG Scratch numbers are the apparent widths of hairline scratches allowed in units of 0.001mm. A scratch number of 80 is really 0.08 mm wide. Additionally, the combined length of maximumsize scratches on the surface of the lens in question cannot exceed 1/4 the diameter of the usable lens area. Digs represent the apparent diameters of allowable defects such as bubbles, pinholes and inclusions on the surface of lens or coating. Digs are specified in units of 0.01mm, so a dig value of 50 is actually .5mm diameter allowable inclusion. The allowable number of maximum size digs within the useful area of the lens is one, and the sum of the diameters of all digs cannot exceed twice the diameter of the minimum size dig number specified. SCRATCH SPECIFICATION DIG SPECIFICATION SCRATCH CLASS MAXIMUM WIDTH DIG CLASS MAXIMUM DIAMETER 5 10 20 40 60 80 120 .00020 .00039 .00079 .00157 .00236 .00315 .00472 5 10 20 30 40 50 70 100 .0020 .0039 .0079 .0118 .0158 .0197 .0276 .0394 NOTES: 1. All class 5 and 10 digs must be separated by at least .040 inches. 2. The sum of the dig diameters must be less than 2 times the maximum dig diameter allowed within any .80 inch diameter. 14 Fused Quartz Rod FUSED QUARTZ RODS SIZE (mm) 1.0 1.5 2.0 2.5 3.0 4.0 5.0 6.0 6.4 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 O.D. TOLERANCES ± .20mm ± .30mm ± .20mm ± .25mm ± .30mm ± .15mm ± .15mm ± .15mm ± .20mm ± .30mm ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% OVALITY BOW .10mm .12mm .15mm .10mm .10mm .10mm .10mm .10mm .10mm .10mm 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long SIZE* (mm) 18.0 19.0 20.0 22.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 36.0 37.0 38.0 40.0 O.D. TOLERANCES ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% ± 1.5% OVALITY BOW 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1% max. 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long 1.3mm / 1220mm long PLEASE NOTE: Quartz Rod 26mm diameter and larger is subject to minimum case quantities. Please call 440.639.6399 for availability. 15 Fused Quartz Tubing FUSED QUARTZ TUBING I.D. (mm) O.D. (mm) I.D. (mm) O.D. (mm) I.D. (mm) O.D. (mm) I.D. (mm) O.D. (mm) I.D. (mm) O.D. (mm) I.D. (mm) O.D. (mm) 1.00 1.00 1.00 1.00 1.00 2.00 2.00 2.00 2.00 2.00 2.30 3.00 3.00 3.00 3.00 3.60 4.00 4.00 4.00 4.10 4.50 5.00 5.00 5.00 5.00 5.00 6.00 6.00 6.00 6.00 7.00 7.00 7.00 7.75 2.00 3.00 4.00 5.00 6.00 3.00 4.00 5.00 6.00 8.00 6.30 4.00 5.00 6.00 8.00 8.00 6.00 6.35 8.00 10.00 9.10 7.00 7.25 8.00 9.00 10.00 8.00 10.00 12.00 13.00 9.00 9.60 10.40 9.75 8.00 8.00 8.00 9.00 9.00 9.00 9.00 10.00 10.00 10.00 10.50 10.50 10.50 11.00 11.00 12.00 12.00 12.00 13.00 13.00 13.00 13.00 13.50 14.00 14.00 14.00 15.00 15.00 15.00 16.00 16.00 16.00 17.00 17.00 10.00 11.00 12.00 11.00 11.80 13.00 15.00 12.00 13.00 14.00 12.75 13.00 15.80 13.00 15.00 14.00 15.00 16.00 15.00 15.80 16.00 16.20 19.00 16.00 18.00 19.00 17.00 18.00 20.00 18.00 19.00 20.00 19.00 20.00 18.00 18.00 18.00 18.00 19.00 19.00 20.00 20.00 20.00 20.00 20.00 20.00 22.00 22.00 22.00 22.00 24.00 24.00 24.00 25.00 25.00 25.00 26.00 26.00 27.00 28.00 28.00 30.00 30.00 30.00 32.00 32.00 32.00 34.00 20.00 20.50 21.00 21.60 22.00 25.00 22.00 22.50 23.00 24.00 24.50 25.00 24.00 24.50 25.00 25.80 26.00 28.00 30.00 27.00 28.00 28.80 29.00 30.00 30.00 31.00 32.00 33.00 34.00 36.00 35.00 36.00 38.00 37.00 34.00 35.00 35.00 36.00 37.00 38.10 40.00 40.00 40.00 40.00 42.00 42.00 44.00 45.00 46.00 47.00 48.00 50.00 50.00 52.00 53.00 55.00 57.00 60.00 60.00 63.00 64.00 65.00 66.00 70.00 70.00 73.00 75.00 80.00 38.00 38.00 40.00 40.00 40.00 42.10 43.00 44.00 45.00 46.00 45.00 46.00 48.00 48.00 50.00 50.00 52.00 54.00 55.00 58.00 57.00 59.00 61.00 64.00 65.00 67.00 68.00 69.00 70.00 74.00 75.00 77.00 80.00 85.00 85.00 90.00 95.00 101.60 101.60 105.00 105.00 110.00 115.00 115.00 120.00 125.00 130.00 130.00 130.00 135.00 135.00 140.00 140.00 145.00 145.00 150.00 150.00 155.00 160.00 165.00 165.00 170.00 170.00 176.00 178.00 180.00 184.00 184.00 90.00 95.00 100.00 106.60 114.30 110.00 117.70 115.00 120.00 127.70 125.00 130.00 135.00 136.00 142.70 141.00 147.70 146.00 152.70 151.00 157.70 156.00 162.70 161.00 166.00 171.00 177.70 176.00 182.70 184.00 185.00 192.70 190.00 196.70 190.00 195.00 200.00 203.00 208.00 211.00 215.00 215.00 220.00 220.00 220.00 221.00 225.00 227.00 230.00 230.00 235.00 240.00 241.00 241.00 245.00 250.00 257.00 260.00 265.00 270.00 290.00 300.00 306.00 320.00 196.00 201.00 206.00 211.00 216.00 221.00 221.00 225.00 226.00 228.00 230.00 229.00 235.00 235.00 236.00 240.00 245.00 246.00 249.00 251.00 253.00 260.00 265.00 268.00 275.00 280.00 300.00 309.00 315.00 330.00 PLEASE NOTE: Additional sizes of Fused Quartz Tubing are available upon request. Please call 440.639.6399 for availability. 16 FUSED QUARTZ TUBING FOR COMPRESSION TYPE FITTINGS O.D. INCHES O.D. MILLIMETERS 1/4 3/8 1/2 5/8 6.35 9.50 12.70 15.80 FLAT AND OVAL TUBING Oval & Flat Tubing TWIN TUBES Twin Tubes 17 TUBING TOLERANCES DIAMETER DIAMETER DIAMETER OUT OF ROUND WALL RANGE REFERENCE NOMINAL % OF O.D. THICKNESS (mm) % MAXIMUM UP TO 5.9 6–35 35.1–79.9 80–150 151–189 190 UP O.D. O.D. O.D. O.D. O.D. O.D. ± 2.5 % ± 2 % ± 2 % ± 2 % ± 2 % ± 2 % 2 % 1.5 % 1.5 % 1.2 % 1.2 % 1.2 % ± 10 % ± 10 % ± 10 % ± 10 % ± 20 % ± 25 % SIDING MAXIMUM % WALL 10 % 10 % 10 % 20 % 20 % 20 % BOW 1200 (mm) LENGTH (mm) 2 2 2 3 3 3 ± 3.2 ± 3.2 ± 6.4 ± 6.4 ± 9.5 ± 12.7 PROFILES AND BENDS Profiles and bends are available in various shapes. MULTI-HOLE CAPILLARIES With 2, 3, 4 and more holes. Other sizes and tolerances are available upon request. Inner diameter range is 0.4mm to 2mm. Outer diameter range is .5mm to 30mm. 18 Square & Rectangular Tubing RECTANGULAR TUBING • CLEAR FUSED QUARTZ RECTANGLE SIZE I.D. (mm) 2x4 3x5 3x7 3x9 4x6 4x8 5x7 5x9 6x8 6 x 10 7x9 7 x 11 7 x 13 8 x 12 STANDARD WALL THICKNESS 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm PLEASE NOTE: Additional sizes are available upon request for items on this page. Please call 440.639.6399 for availability. SQUARE TUBING • CLEAR FUSED QUARTZ SQUARE SIZE I.D. (mm) 0.5 1 2 3 4 5 6 WALL (mm) SQUARE SIZE I.D. (mm) 0.25 0.50 0.75 0.75 1.3 1.3 1.3 7 8 9 10 12 13 14 WALL (mm) 1.3 1.3 1.3 1.3 1.3 1.3 1.3 WALL TOLERANCE NOMINAL WALL 0.25 mm 0.50 mm 0.75 mm 0.90 mm 1.30 mm 1.75 mm ± TOLERANCE 0.15 mm 0.25 mm 0.30 mm 0.30 mm 0.50 mm 0.50 mm PRECISON BORE TUBING WHEN ORDERING The manufacturing of Precision Bore Tubing involves the heating and softening of standard tubing over a precision mandrel when precise tolerances are required. The final product is formed as the tube is pulled over the mandrel. Because we provide a wide range of Precision Bore Tubing, we cannot list all that is available. Please call or write us with your specific requirements. Size availability up to 2.75" Tolerances available as tight as ±.002" 19 COLORED QUARTZ FUSED QUARTZ CYLINDERS 20 Evaporating Dishes Crucibles With Lids Graded Seals • Quartz To Pyrex Round Dishes Test Tubes EVAPORATING DISHES CAPACITY (cc) DIAMETER (mm) HEIGHT (mm) 25 50 75 100 150 200 250 300 350 400 450 500 50 65 70 80 90 100 110 120 130 140 150 160 25 33 35 40 45 50 55 60 65 70 75 80 ROUND DISHES APPROXIMATE CAPACITY(cc) 20 35 65 75 100 120 125 DIAMETER (mm) HEIGHT (mm) 55 60 70 89 100 110 127 15 15 15 15 15 15 15 CRUCIBLES w/LIDS CAPACITY TOP BASE HEIGHT (cc) DIAMETER(mm) DIAMETER(mm) (mm) 10 20 30 50 100 28 36 43 50 62 14 17 22 22 35 30 40 38 48 66 Stopcocks GRADED SEALS • QUARTZ TO PYREX I.D. x O.D. (mm) 2x4 3x5 4x6 5x7 6x8 7x9 8 x 10 9 x 11 10 x 12 11 x 13 12 x 14 13 x 15 I.D. x O.D. (mm) 14 x 16 15 x 17 16 x 18 17 x 19 18 x 20 20 x 23 22 x 25 25 x 28 27 x 30 30 x 33 32 x 35 35 x 38 APPROXIMATE CAPACITY(cc) I.D. x O.D. (mm) 37 x 40 38 x 42 40 x 43 42 x 45 45 x 48 46 x 50 48 x 52 50 x 54 55 x 59 60 x 64 65 x 69 70 x 74 TEST TUBES w/LIP INSIDE DIAMETER(mm) 100 125 150 200 12 15 18 25 10 20 35 95 HEIGHT (mm) STOPCOCKS • STRAIGHT BORE BORE (mm) SIDE ARM O.D. (mm) 2 4 6 8 8 10 12 16 PLEASE NOTE: Additional sizes are available upon request for items on this page. Please call 440.639.6399 for availability. 21 Boiling Flasks CAPACITY (cc) GLOBE DIA. (mm) 10 25 50 100 125 150 200 250 500 750 1000 1500 2000 3000 4000 5000 6000 30 40 52 65 69 74 79 86 102 124 136 149 162 183 202 218 230 Boiling Flasks With Outer Joint BOILING FLASKS OVERALL ROUND HT. (mm) OVERALL FLAT HT. (mm) NECK DIA. (mm) NECK LENGTH (mm) 50 65 77 95 101 108 115 126 152 214 231 249 272 333 367 393 415 47 62 74 91 96 103 110 120 148 206 221 238 260 320 353 378 398 17 20 22 22 24 25 27 28 34 34 34 38 40 44 44 50 50 20 25 25 30 32 34 36 40 50 90 95 100 110 150 165 175 185 Distilling Flasks DISTILLING FLASKS CAPACITY GLOBE OVERALL (cc) DIA. HEIGHT (mm) (mm) 10 25 50 100 125 150 200 250 500 750 1000 1500 2000 3000 BOILING FLASKS W/Ts OUTER JOINT CAPACITY JOINT GLOBE OVERALL OVERALL NECK NECK (cc) SIZE DIAMETER ROUND HT. FLAT HT. DIAMETER LENGTH (mm) (mm) (mm) (mm) (mm) 50 100 125 150 200 250 500 750 1000 1500 2000 19/38 24/40 24/40 24/40 24/40 24/40 24/40 29/42 29/42 29/42 29/42 52 65 69 74 79 86 102 124 136 149 162 117 132 136 141 146 153 169 231 243 256 269 114 128 132 136 141 147 164 223 233 245 257 22 28.8 28.8 28.8 28.8 28.8 28.8 34 34 34 34 65 67 67 67 67 67 67 107 107 107 107 Kjeldahl Flasks 95 100 122 155 163 170 181 192 254 284 301 319 340 373 30 40 52 65 69 74 79 86 109 124 136 149 169 183 NECK DIA. (mm) 15 19 19 19 19 22 24 24 26 26 28 30 32 32 NECK SIDE TUBE SIDE TUBE LENGTH DIA. LENGTH (mm) (mm) (mm) 65 70 70 90 94 96 102 106 145 160 165 170 178 190 100 110 110 110 110 110 130 130 130 130 140 140 140 140 6 7 7 7 8 8 8 8 9 9 11 11 11 11 KJELDAHL FLASKS CAPACITY (cc) GLOBE DIAMETER (mm) OVERALL HEIGHT (mm) NECK DIAMETER (mm) NECK LENGTH (mm) 50 100 250 300 500 650 750 800 41 56 70 80 96 104 108 110 171 199 250 289 308 318 323 326 20 20 25 27 30 30 33 35 130 130 180 190 190 190 190 190 PLEASE NOTE: Additional sizes are available upon request for items on this page. Please call 440.639.6399 for availability. 22 Erlenmeyer Flasks Erlenmeyer Flasks With Outer Joint ERLENMEYER FLASKS Tall Form Beakers BEAKERS • LOW FORM CAPACITY (cc) BASE DIAMETER (mm) OVERALL HEIGHT (mm) NECK DIAMETER (mm) NECK LENGTH (mm) CAPACITY (cc) BASE DIAMETER (mm) OVERALL HEIGHT (mm) 10 25 50 100 150 200 250 300 500 750 1000 1500 2000 3000 4000 5000 6000 30 40 49 67 71 83 84 93 109 127 138 152 166 200 220 236 248 51 67 85 110 122 138 146 156 194 224 232 264 288 320 360 390 410 10 13 15 22 24 28 30 34 34 37 40 45 48 50 52 54 56 13 17 21 25 30 30 30 36 40 52 58 64 70 76 80 86 90 10 25 50 100 150 200 250 300 400 500 600 800 1000 1500 2000 2500 4000 25 33 45 51 59 64 67 74 80 84 90 100 107 132 138 142 160 32 45 50 62 76 84 86 92 105 112 119 127 140 152 168 190 254 ERLENMEYER FLASKS W/Ts OUTER JOINT BEAKERS • TALL FORM CAPACITY (cc) JOINT SIZE GLOBE DIAMETER (mm) OVERALL HEIGHT (mm) NECK DIAMETER (mm) NECK LENGTH (mm) CAPACITY (cc) BASE DIAMETER (mm) OVERALL HEIGHT (mm) 50 100 200 250 300 500 750 1000 1500 2000 19/38 24/40 24/40 24/40 24/40 24/40 29/42 29/42 29/42 29/42 49 67 83 84 93 109 127 138 152 166 129 132 175 183 187 221 241 243 269 287 22 28.8 28.8 28.8 28.8 28.8 34 34 34 34 65 67 67 67 67 67 69 69 69 69 10 25 50 100 150 200 250 300 400 500 600 1000 22 29 35 45 49 54 57 61 68 74 77 92 45 57 73 89 102 111 118 124 140 146 168 181 PLEASE NOTE: Additional sizes are available upon request for items on this page. Please call 440.639.6399 for availability. 23 Low Form Beakers Ball & Socket Joints SIZE Ball O-Ring Joints Flat O-Ring Connectors BALL & SOCKET JOINTS TUBE GROUND BALL I.D. x O.D.(mm) DIAMETER(mm) 2x 3x 5x 7x 9x 12 x 15 x 20 x 25 x 25 x 30 x 40 x 50 x 69 x 12/2 12/3 12/5 18/7 18/9 28/12 28/15 35/20 35/25 40/25 50/30 65/40 75/50 102/75 SIZE 12/2 12/3 12/5 18/7 18/9 28/12 28/15 35/20 35/25 40/25 50/30 65/40 75/50 102/75 6 6 8 9.5 11.8 15 18 23 28.8 28.8 34 45 55 77 OVERALL LENGTH (inches) A (mm) SIZE 4 4 4 4-1/2 4-1/2 5 5 5 5 5 5 6 6 6 12 12 12 18 18 28 28 35 35 40 50 65 75 102 5 7 9 12 15 20 25 30 40 50 75 100 125 150 200 12 12 12 18 18 28 28 35 35 40 50 65 75 102 BALL O-RING JOINTS TUBE I.D. x O.D.(mm) 2x6 3x6 5x8 7 x 9.5 9 x 11.8 12 x 15 15 x 18 20 x 23 25 x 28.8 25 x 28.8 30 x 34 40 x 45 50 x 55 69 x 77 O-RING SIZE (mm) OVERALL LENGTH (inches) 011 011 011 112 112 116 116 120 120 124 128 137 142 153 4 4 4 4-1/2 4-1/2 5 5 5 5 5 5 6 6 6 Conical Pipe Flange FLAT O-RING CONNECTORS TUBE I.D. x O.D.(mm) OVERALL LENGTH (inches) O-RING SIZE (mm) 5x8 7 x 9.5 9 x 11.8 12 x 15 15 x 18 20 x 23.6 25 x 28.8 30 x 34 40 x 46 50 x 55 75 x 80 101.6 x 106.6 125 x 130 150 x 156 203 x 211 4 4-1/2 4-1/2 5 5 5 5 6 6 6 6 6 6 6 6 2-110 2-111 2-112 2-116 2-116 2-214 2-124 2-223 2-226 2-229 2-341 2-349 2-355 2-362 2-371 CONICAL PIPE FLANGE FLANGE SIZE 1/4 1/2 3/4 1” 1-1/2 FLANGE O.D. 3/4 1” 1-17/64 1-9/16 2-1/8 24 Standard Taper Joints STANDARD TAPER JOINTS SIZE INNER JOINT OUTER JOINT GROUND OVERALL A B I.D. x O.D. I.D. x O.D. LENGTH LENGTH (mm) (mm) (mm) (mm) (mm) (inches) 5/12 5/20 7/15 7/25 10/30 12/30 14/35 19/38 24/40 29/42 34/45 40/50 45/50 50/50 55/50 60/50 71/60 86/50 103/60 115/60 135/60 145/60 155/60 165/60 175/60 200/70 210/60 220/60 230/60 25 3x5 3x5 4x6 4x6 6x8 7 x 9.5 9 x 11.8 12 x 15 18 x 21.6 20 x 24 25 x 28.8 35 x 38 38 x 42 42 x 46 46 x 50 50 x 55 60 x 65 75 x 80 90 x 95 105 x 110 130 x 135 135 x 141 145 x 151 150 x 156 160 x 166 184 x 90 200 x 206 208 x 216 220 x 226 5x8 5x8 7 x 10 7 x 10 9 x 13 12 x 15 15 x 18 18 x 21.6 25 x 28.8 30 x 34 34 x 38 40 x 45 46 x 50 50 x 55 55 x 59 60 x 65 70 x 75 75 x 80 95 x 101 105 x 110 125 x 131 135 x 141 145 x 151 150 x 156 160 x 166 184 x 90 200 x 206 208 x 216 220 x 226 12 20 15 25 30 30 35 38 40 42 45 50 50 50 50 60 60 50 60 60 60 60 60 60 60 70 60 60 60 4 4 4 4 4.5 4.5 4.5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 8 8 8 8 8 8 8 8 5 5 7 7 10 12 14 19 24 29 34 40 45 50 55 60 71 86 103 115 135 145 155 165 175 200 210 220 230 12 20 15 25 30 30 35 38 40 42 45 50 50 50 50 50 60 50 60 60 60 60 60 60 60 70 60 60 60 Quartz Screwthreads & Cap • Open Ended Quartz Tube STD TAPER JOINTS • MEDIUM LENGTH SIZE 10/18 12/18 14/20 19/22 24/25 29/26 34/28 40/35 INNER JOINT OUTER JOINT GROUND OVERALL A B I.D. x O.D. I.D. x O.D. LENGTH LENGTH (mm) (mm) (mm) (mm) (mm) (inches) 6x8 7 x 9.6 9 x 11.8 12 x 15 18 x 21.6 20 x 24 25 x 28.8 35 x 38 9 x 13 12 x 15 15 x 18 18 x 21.6 25 x 28.8 30 x 34 34 x 38 40 x 45 18 18 20 22 25 26 28 35 4 4 4 4 4.5 4.5 4.5 5 18 18 20 22 25 26 28 35 10 12 14 19 24 29 34 40 QUARTZ SCREWTHREADS & CAPS SIZE GL 14 18 25 32 45 TUBE O.D. (mm) WALL (mm) 1.5 12 1.8 16 1.8 22 1.5 28 2.0 38 LENGTH (mm) CAP SIZE GL 110 110 110 150 180 14 18 25 32 45 OPAQUE FUSED QUARTZ The opaque quality comes from quartz sands of high purity when reduced to a molten state at a temperature of approximately 2000° C. The high temperature produces a vitreous material characterized by the presence of a multitude of gaseous microbubbles. These bubbles diffract light, giving the material its opacity. The term opaque silica is mainly used for molded or centrifuged parts, while the product obtained by drawing is normally referred to as translucent. Opaque silica glass offers a number of exceptional properties, such as: • Extreme Hardness • Low Expansion • Excellent High Temperature Resistance • Maximum Continuous Temperature 1100° C • Extreme Chemical Purity • Excellent Corrosion Resistance • Excellent Electrical Insulation Properties • Remarkable Stability Under Atomic Bombardment MECHANICAL PROPERTIES ELECTRICAL PROPERTIES Specific Density (according to fusion process) Hardness (Mohs scale) Rupture stress: traction compression N.m -2 N.m -2 1.98 to 2.12 6 2.10 7 5.10 8 Dielectric constants Dielectric rigidity Loss coefficient at 1 MHz CHEMICAL PROPERTIES SiO2 content Element content (typical analysis) Fe Ti Al Ca Mg Na K Li % ppm ppm ppm ppm ppm ppm ppm ppm V.m -1 3.5 5.10 6 20.10 -4 THERMAL PROPERTIES 99.8 14 100 550 40 11 25 20 5 Linear expansion coefficient Specific heat at 20° C Heat conductivity at 20° C Annealing point Softening point K -1 J.kg -1. K -1 W.m -1. K -1 °C °C 5.4.10 -7 7.5.10 2 1.05 1120 1460 26 OPAQUE LABWARE & TRAYS COMBUSTION BOAT WITH HANDLE SIZE (inches) L x W x H 3 4 x x 5/8 3/4 x x 3/8 7/16 PLEASE NOTE: Translucent tubing is available in a number of sizes. Combustion Boat With Handle Pricing is available upon request. Please call 440.639.6399 for more information. RECTANGULAR TRAYS SIZE (inches) Rectangular Trays 27 L x 4 6 6 6 6 6 7 8 9 10 10.25 12 12 x x x x x x x x x x x x x W x H 2 2 3 3 3.5 6 4 4 5 7 6 6 6 x x x x x x x x x x x x x 1 1.5 2 2.5 1.25 3.9375 1 2 2 .875 4 1 4 Additional sizes are available upon request. Please call 440.639.6399 for more information. CUSTOM DESIGN, FABRICATION & REPAIR Technical Glass Products is one of America’s leading fabricators of Fused Quartz products. TGP is also a custom job shop that provides precision tolerance fabrication and machining of products to your specifications. We pride ourselves on the unique methods and equipment we have developed for the production and/or repair of quartzware. In addition, we offer our customers low-cost, time-saving alternatives. If you need help in the area of custom fabrication or repairs, please contact us for a no-obligation evaluation of your project. We have provided our services to numerous industries, some of which are listed below: Semiconductor Fiber Optic Medical Lamp Manufacturers Chemical Environmental Testing Compound Semiconductor Aerospace Water Purification Steel Petroleum Laser Technology Infrared Heating Solar 28 SEMICONDUCTOR GRADE FUSED QUARTZ Fused quartz, with its combination of high purity and mechanical stability at high temperatures, is the ideal material used in the processing of silicon wafers. Technical Glass Products uses only the highest grade raw materials, offering contaminant levels less than 25 ppm. Quartz tubing is available in a number of sizes up to 400 mm, with excellent diameter and wall-thickness tolerances. We offer a full range of fabricated semiconductor ware, along with design assistance from our technical staff. At right is a list of some of the items we manufacture: 29 Plasma Chambers Tanks Lattice Trays Epitaxial Systems Hanger Supports Pedestals Removable Baffles Diffusion Tubes White Elephants End Caps Diffusion Boats Sensor Sheaths Bell Jars Pull Rods Storage Tubes Boat Holders Boat Holder Inserts Thermocouple Sleeves Paddle Systems Sleds Wheeled Carriers FUSED QUARTZ WOOL Fused Quartz Wool has the same properties as pure quartz glass. The fibers are non-flammable and incombustible. The fibers maintain their usable mechanical properties up to 1050°C. Fused Quartz Wool is available in the following forms: • Coarse • Fine • Wool Felts Quartz Felt COARSE 9 µm NOMINAL WOOL FELTS (MATS) Bulk Wool consists of woven basic fibers between 5µm and 15µm. The arrangement of the fibers gives the wool its curly appearance, which prevents compression of the material and improves the desired insulating qualities. The fibers are flexible and have excellent torsion and bending resistance. Standard specifications are: A Felt is quartz wool that has been impregnated with a starch binder to provide a stable sheet that can be handled, cut or fabricated to exact sizes. The binder can be removed by heating the Felt to 900°F for 1 hour, or 500°F for 24 hours. Binder content on the Felt is 4–5% by weight. Standard specifications are: Size Before Rolling & Pressing L 3700mm x W 1600mm x H 150mm Sizes 1000mm x 1000mm 1000mm x 500mm 500mm x 500mm Unit Weight .5 lb. bags 1.1 lb. bags Thickness 5mm (0.2 in) Weight 80 g/m (2.3 oz/yd) Density 0.016 g/cm (1 lb/ft) Other sizes available upon request. Maximum size is 3000mm x 1000mm. FINE 4 µm NOMINAL WOOL Fine Wool consists of woven basic fibers between 1.5µm and 7µm. This product was developed to meet severe technical specifications required by markets that demand a larger specific area. Therefore, this wool offers more efficient thermal conductivity than our standard bulk wool. Unit Weight 10 grams .5 lb. bags Quartz Wool 30 POROSITY Choosing the correct porosity is key for success in working with glass filters. These frits vary in porosity according to grades that are expressed as 00, 0, 1, 2, 3, and 4. The table below shows the various fields of application for each grade of porosity. The pore size indicates the the largest pore in the disc, as well as the the diameter of the smallest particle retained during filtration. FRITTED DISC APPLICATIONS POROSITY) Quartz Frits 00 NOMINAL MAXIMUM PORE SIZE ( µ ) EXAMPLE FIELDS OF APPLICATION 200 – 300 Liquid and gas distribution 150 – 200 Gas distribution Gas distribution in liquids at low pressure Filtration of very coarse precipitates 90 – 150 Coarse filtration, Filtration of coarse precipitates, gas distribution in liquids Liquid distribution, coarse gas filtration Extraction apparatus for coarse grain minerals Loose filter layer substrates for gelatinous precipitates 40 – 90 Preparatory fine filtration Preparatory work with crystalline precipitates Mercury filtration 15 – 40 Analytical filtration Analytical work with medium-fine precipitates Preparatory work with fine precipitates Filtration in cellulose chemistry, fine gas filtration Extraction apparatus for fine-grained minerals 4 – 15 Analytical fine filtration, Analytical work with very fine precipitates (e.g., BaSO4, Cu2O) Preparative work with precipitates of appropriate fineness Non-return and stop valves for mercury QUARTZ FRITS A frit is defined as a porous filter composed of bonded grains of quartz glass. Frits are manufactured from the same high purity raw material as our tubing and rod. Some applications of fritted discs include filtration of liquids or corrosive gas, heat diffusion, flow regulation, and chemically inert and high purity applications. DIAMETER (mm) THICKNESS (mm) 10 15 20 25 30 35 40 50 60 70 80 90 100 2–3 2–3 3–5 3–5 3–5 3–5 3–5 4–6 4–6 4–6 4–6 4–6 4–6 QUARTZ FRITS 1 00 POROSITIES AVAILABLE 0 1 2 3 4 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • AVERAGE POROSITY POROSITY PORE SIZE POROSITY PORE SIZE 00 0 1 200–300 micron 150–200 micron 90–150 micron 2 3 4 40–90 micron 15–40 micron 4–15 micron 31 0 2 3 4 CLEANING WHEN JOINING FUSED QUARTZ AND OTHER MATERIALS The cleaning of fused quartz is critical before it is used in any application. The fused quartz should be cleaned by placing it in a 7% maximum solution of Ammonium Bifluoride for no more than ten (10) minutes, or a 10% volume maximum solution of Hydrofloric Acid for no more than five (5) minutes. After cleaning, using the above method, the fused quartz should be rinsed in deionized or distilled water and then dried. Quartz and silica glass only slightly expand with increases in temperature compared to other materials. Care must be taken when these glass products are connected to other materials and the temperature rises, in order to avoid the development of cracks. To further reduce the possibility of contamination, care should be used in handling fused quartz. The use of clean cotton gloves at all times is essential. CARE MUST BE TAKEN DURING FURNACE INSERTION RUNNING IN PROCEDURE In order to increase resistance to devitrification and sag of your quartzware, an even layer of cristobalite must be formed on the O.D. of quartz tubes. Expose a new tube to a temperature of up to 1200°C and rotate it 90° every two (2) hours for the first 12 to 24 hours. STORAGE Space permitting, fused quartz should be stored in its original shipping container. If that is not practical, at least the wrapping should be retained. In the case of tubing, the end coverings should be kept in place until the product is used. This protects the ends from chipping and keeps out dirt and moisture which could compromise the purity and performance of the tubing. BECAUSE THE PRODUCTS ARE ANNEALED Both quartz and silica glass are annealed at approximately 1150°C. However, they reach a strain point at about 1120°C. These glass products, if rapidly cooled after use at temperatures above this strain point, will develop strain again. Special care should be taken when using large sized products. Quartz and silica glass feature low thermal conductivity. If the glass product comes too close to a heating element, or is put in direct contact with a flame, it may become locally heated and develop cracks. Long glass tubes may also deform at temperatures of 1100°C or higher. Care should be taken to support both glass types, especially large-sized products. DEVITRIFICATION Devitrification of quartz and silica glass means transition from a metastable (vitrified) state to a stable crystallized state of cristobalite. Devitrification occurs when the product is used at high temperatures over a long period of time, or it is heated while impurities adhere to its surface. Even very small impurities on the surface can have a major influence. Under such conditions, devitrification may even occur at temperatures of 1000°C or less. This hardly ever occurs at temperatures of 1150°C or less, if the glass surface is perfectly clean. Devitrification usually starts when the temperature rises to 1200°C or higher, then further develops as the temperature increases. SPECIAL HANDLING & PRECAUTIONS When handling, always wear clean, lint free gloves or powder free latex gloves. Be sure to avoid direct contact of the glass with bare hands. The skin’s natural salts contain alkali metal elements such as sodium and potassium that speed devitrification. 32