Common Lab Glassware and Tools

used in chemistry for the same purposes that they are used in everyday life… to prevent spillage.
used to contain volumes of liquids. They are not volumetric and their accurate to +/- 5% of their graduation. They should not be used to measure
Buret & Buret Stand
 is used to deliver solution in precisely measured, variable volumes. Used primarily for titration, to deliver one reactant until the precise end point of the reaction is reached. are volumetric and therefore are used to make accurate measurements.
Graduated Cylinder
are volumetric measuring devices designed to measure and deliver accurate volumes of liquids. When measuring with one, you always measure from the center of the curvature in the liquid, called the meniscus. Some liquids, such as mercury have a convex meniscus. Most liquids, however, will have a concave meniscus and the volume in the device should be read from the bottom center of this meniscus.
Erlenmeyer Flask
use for mixing, transporting, and reacting but not for accurate measurements. The volumes stamped on the sides are approximate and only accurate to within about 5%. Should not be used for measuring volumes.
used to start Bunsen Burners. Constructed with a rough surface positioned opposite to a piece of flint. When its arm containing the flint is pushed back and forth over the rough surface, sparks are produced. These sparks when created in the presence of a flammable gas such as propane will start a fire or for our purposes a Bunsen burner
Mohr pipet
transfer pipet used to measure small amounts of solution very accurately. Common volumes range from 0.1 mL to 10 mL.
Test tubes & Test Tube Rack
is a non-volumetric cylindrical container used to observe small volumes of reactants
Watch Glass
is a round, shallow concave piece of glass that can be used to hold liquid or solids for evaporation or it can be used as a lid for a beaker to prevent dirt from getting into a solution. Because it is not an airtight seal, gases can still be exchanged.
Test Tube Clamp
used to allow a person to be “hands-free” during the progress of a reaction. used to handle test tubes that are hot or to prevent slippage.
Pipette Bulb
used in conjunction with Pipets to transfer liquids from place to place.
used to transport and distribute dry chemical compounds. Used most often when weighing out chemicals on a balance because they allow you to transfer very small quantities of the chemical at a time.
Filter Flask
an Erlenmeyer flask made of slightly thicker glass to withstand high pressure. the side-arm is conical and used to attach a vacuum hose. A Buchner funnel is placed into the neck of the flask to allow pressurized filtration of solutions.
Volumetric Flask
containers that have been calibrated to a specific volume. These flasks, unlike Erlenmeyer flasks or beakers, are marked with lines that are calibrated to a specific volume of liquid. Should be used whenever an accurate concentration of solution is required.
Buchner Funnel
a suction or vacuum filtration funnel that is used in conjunction with a filter flask to separate particulates from solution. Filter papers of varying pore sizes are used to specify the size of the particulate retained.
used to store dried samples in a dry atmosphere.
Wash Bottle
is generally filled with distilled or deionized (DI) water and used to make solutions and rinse glassware. The DI water should be kept fresh as exposure to air will eventually introduce CO2 and increase the acidity. Can be used for any liquid so always label the bottle appropriately.
Weigh Boat
disposable plastic containers used to prevent reagents from contacting the balance pan when they are they are being weighed.

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