Lab Equipment Introduction Beaker Function: Provides an approximate measurement of a liquid’s volume in liters (L) or millimeters (mL). Graduated Cylinder Function: • Measures the volume of liquid in mL • The liquid is measured at the meniscus (curved surface of the water) Florence or Erlenmeyer Flask Function: • Container for chemicals • Measures volume • Cylindrical neck allows liquids to be swirled Test Tube Function: • Holds liquid chemicals • Glass or plastic tube with an open or stoppered end Petri Dish Function: • Allows the growth and observation of organisms • Looks like a clear shallow dish with a lid • Can be plastic or glass and cleaned for repeated use. Test Tube Clamp Function: • Holds the test tube • Used when the test tube contains dangerous or hot chemicals Hot Plate Function: • Heats chemicals or other lab objects • Powered by electricity, not fire. Thermometer Function: • Measures temperature • Measurements reported in degrees Celsius • We use thermometers with alcohol, not mercury. Microscope Function: • Uses objective lenses to magnify small objects for observation • Magnifications can vary Stereoscope Function: • Also called a dissecting microscope • Able to zoom in on an object for closer observation or dissection Hand Lens Function: • Makes objects look bigger for observation • Can be plastic or glass Eyedropper Function: • Transfers a small amount of liquid volume (drop by drop) by squeezing and releasing the bulb Dissecting Equipment Function: • Helps to cut, observe, transfer, and examine biological specimens. • Includes: probe, scissors, scalpel, tweezers, pins • NOTE: You need to know images for a Scalpel, Probe, Forceps, and Dissecting scissors individually. Balance Function: • Measures the mass of an object • Measurements are in grams Lab Incubator Function: • Device used to grow and maintain microbiological cultures • Maintains optimal temperature and humidity Task: What would happen if you put a petri dish containing bacteria into an incubator? Biological Specimen Function: • Preserved biological organism or object • Used for biological research and observation Microscope Slides Function: •Thin flat piece of glass used to hold objects in place under a microscope. Dissecting Pins Function: • Used for dissecting organisms • Holds cut specimen in place. Dissecting Pan Function: • Used for dissecting organisms • Keeps specimen in a contained area Ring Stand Function: • Allows for attachment of clamps to suspend test tubes, flasks, wire gauze and clay triangles. Ring Clamp Function: • Holds glassware, wire gauze, and clay triangles for heating over open flame.