12/18/2023 0 Comments Beaker vs graduated cylinderTutorialĪ piece of flint held inside a small bowl and attached to a metal piece that can be rapidly slid across the flint to create a spark. The separated beams fall on a wavelength scale in nanometers, allowing one to measure the wavelengths of light in the incoming beam. Don't stick it directly into a solid jar if you're being careful.Īlso called a "spectrometer," this device uses diffraction to separate an incoming light beam into individual wavelengths. Used to fish out goopy solids and other stubborn buggers in the bottom of flasks.Ī curved piece of metal in the shape of a half-pipe with a tapered end. Clamps and clamp holders attach to the rod.Ī wedge-shaped piece of rubber with an opening that fits onto the end of a glass stirring rod. Do not push out the last bit of liquid-just allow gravity to do its work.Ī stand with a wide metal base and a single metal rod. Used to deliver liquids with very high precision. The mark corresponds to the volume indicated on the pipet. Push out entirety of contents when using.Ī thin cylindrical piece of glass with a bulb near one end and a single mark. Used to deliver liquids with moderate precision. Use the small tan Pasteur pipet bulbs with Pasteur pipets, rather than the large blue bulbs.Ī thin cylindrical piece of glass or plastic with a conical nozzle and many markings. Pasteur pipets are small glass pipets that lack markings used to transfer small amounts of liquid and/or add liquid dropwise. Squeeze the bulb, place on the end of the pipet, and release to draw up liquid. The pipet bulb is a blue, balloon-shaped device made of rubbery polymer that fits onto the end of pipets. Connect the black lead to COM and the red lead to "VΩmA." Use the dial to adjust the quantity measured and the scale of measurement. When used with solutions, must be calibrated with pure solvent.Ī thin metal probe used to measure temperature of liquids or solids.Ī multimeter is used to measure current or voltage across two points in an electrical circuit. Used to measure absorption spectra of pure liquids or liquid solutions. Maximum pressure reading of 2 atmospheres.Ī large probe with a USB cord and slot for cuvettes. Must be calibrated using buffers of known pH.Ī boxy probe with a Luer lock inlet, used to measure the pressure of gases. Should be stored in solution when not in use, and should always remain wet during experiments. The touchscreen is best controlled using an accompanying stylus.Ī probe with a delicate electrode at its base, used to measure pH of liquid solutions. Used to handle hot glassware.Ī handheld device that contains several ports for probes (see below) and a USB port for a flash drive. Glove-like sleeve made of a rubbery and thermally insulating polymer. Used to measure liquids with moderate precision. Used to deliver solids without making a mess-essential in precise preparation of solid-liquid solutions.Ī thin cylinder containing many markings. Used to deliver liquids without making a mess!Ī funnel containin a relatively wide nozzle. Used in conjunction with a filtering flask to filter mixtures of solids and liquids.Ī funnel containing a relatively thin nozzle that fits into the top of a buret. Used to prepare solutions and measure liquids very precisely.Ī porcelain or plastic funnel containing many small holes and a rubber stopper around its nozzle. The mark corresponds to the volume indicated on the flask. When connected to vacuum and capped with a Buchner funnel, used to filter mixtures of solids and liquids.Ī round flask with a long, thin opening bearing one mark. Erlenmeyers are used to hold liquids but should not be used for measurements of volume where precision is needed.Ī heavy Erlenmeyer flask with an inlet for vacuum and an opening that fits a Buchner funnel. Don't place its ribbed sides in the light path of the spectrometer!Ī tapered flask with an opening thinner than the base and coarse volumetric markings. Cover with lid to avoid mass loss.Ī clear, rectangular vessel of glass or plastic used to hold solutions for spectrometry. Used to heat solids to high temperatures. Distributes heat evenly over the surface of objects it holds.Ī porcelain dish capable of withstanding extreme heat (e.g., from a Bunsen burner). Used to hold crucibles and porcelain dishes heated by a Bunsen burner. A clamp holder screws in to both the ring stand and the clamp.Ī triangular device made of heat-resistent clay. Used in conjunction with a ring stand to hold equipment in place. Used to deliver liquids with very high volumetric precision. TutorialĪ long, thin cylindrical piece of glassware with a stopcock on one end. The valve on the base controls the flow rate of gas the valve on the side controls the amount of oxygen in the gas mixture. Used to hold liquids, but should not be used for measurements of volume where precision is needed.Ī metal tube with two valves and an inlet for natural gas. A cylindrical piece of glassware with coarse markings.
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