Organic Chemistry Laboratory CHEM 241 Glassware and Equipment Worksheet Name Breaker Test tube Description Beakers can be used to hold liquid or solid samples or as a container for reactions. Test tubes are used to hold, mix, and heat chemical experiments. Test Tube Holder A test tube holder, on the other hand, is a tool used to hold one test tube. Erlenmeyer Flask Erlenmeyer flasks are used to contain liquids and for mixing, heating, cooling, incubation, filtration, storage, and other liquid-handling processes. Measuring cylinders are instruments commonly used in laboratories to measure the volume of different liquids. A burette is used to dispense small volumes of liquid called aliquots, or sometimes gas, with high accuracy. Measuring cylinder Burette Picture Watch Glass A watch glass is a round, concave glass dish used for evaporation in chemistry. Evaporating Evaporating dishes Dish are pieces of heat-tolerant laboratory glassware that are used to hold substances or liquids that are being melted or evaporated. Filter Flask Filtering flasks are used in numerous general laboratory procedures for rapid filtration of liquids. Stemmed Funnel Stemmed funnels are used for gravity filtration. Powder Funnel The disposable powder funnel has a short, wide discharge and is suitable for transferring powdered samples and materials, granulates and suspensions as well as other liquids. Separatory Funnel Buchner Funnel Separatory funnels are used in the lab for liquidliquid extractions, separating a mixture's components into two solvent phases of different densities. In organic chemistry, these funnels are used to collect recrystallized compounds because they help remove moisture from the final product. Hirsch Funnel a cylindrical often porcelain filtering funnel that has a perforated plate on which the filter paper is placed and that is used usually with a vacuum. Round Bottom Flask Round-bottom flasks are types of flasks having spherical bottoms used as laboratory glassware, mostly for chemical or biochemical work. This three-neck distilling flask with a round bottom and angled necks allows you to connect three components for complex distillations. Three Neck Flask Wash Bottle It's a flexible bottle with a bent tube that is inserted through its stopper or cap. The tube is used to direct a stream of water onto something that needs to be rinsed or washed. Glass Stopper A glass stopper is pretty much what it sounds like. Also called a ground glass joint, a glass stopper is closed on one end and on the other equipped with a tapered joint. Rubber Tubing Rubber tubing, also known as rubber hose or rubber piping, is made of natural and synthetic rubber and is used to circulate and transport liquids and gases for household and industrial uses. Thiele Tube The Thiele tube, named after the German chemist Johannes Thiele, is a laboratory glassware designed to contain and heat an oil bath. Capillary Tube It is a cylindrical tube with a constant diameter that can be filled up with any gas, liquid, or solid particles. Melting Point Apparatus A melting-point apparatus is a scientific instrument used to determine the melting point of a substance. Bunsen Burner A Bunsen burner is a common piece of laboratory apparatus that produces a single open flame by burning gas. Rotary Evaporator Rotary evaporators (rotovaps) are devices employed for removing solvents efficiently via the process of evaporation.
