Common Laboratory Apparatus 235u6a

Common Laboratory Apparatus Last Update: July 5, 2006

Bunsen burners are sources of heat.

Watch glasses are for holding small samples or for covering beakers or evaporating dishes.

Graduated cylinders are for measurement of an amount of liquid. The volume of liquid can be estimated to the nearest 0.1 mL with practice.

Pipets are used to dispense small quantities of liquids.

Test tubes are for holding small samples or for containing small-scale reactions.

Glass funnels are for funneling liquids from one container to another or for filtering when equipped with filter paper.

Volumetric flasks are used to measure precise volumes of liquid or to make precise dilutions. Erlenmeyer flasks are useful to contain reactions or to hold liquid samples. They are also useful to catch filtrates.

Wash bottles are used for dispensing small quantities of distilled water.

Wire gauze on a ring s beakers to be heated by Bunsen burners

Tools and their uses: 1. beaker - a liquid-measuring container 2. burette - measures volume of solution 3. clay triangle - a wire frame with porcelain used to a crucible 4. wire gauze - used to spread heat of a burner flame 5. test tube - used as holder of small amount of solution

18.glass funnels - for funneling liquids from one container to another, or for filtering when equipped with filter paper. 19.graduated cylinders - for measurement of an amount of liquid. The volume of liquid can be estimated to the nearest 0.1 mL with practice. 20.ring stand (with rings or clamps) - for holding pieces of glassware in place.

6. forceps - holds or pick up small objects

21.test tubes - for holding small samples or for containing small-scale reactions

7. graduated cylinder - measures approximate volume of liquids

22.test-tube holders - for holding test tubes when tubes should not be touched

8. graduated pipette - measures solution volumes

23.tongs - similar function to forceps, but are useful for larger items

9. condenser - used in distillation 10.crucible - used to heat a small amount of a solid substance at a very high temperature 11.funnel - used to transfer solids and liquids without spilling 12.thermometer - measures temperature 13.balance - measures mass of material 14.pH meter - measures acidity of solutions 15.centrifuge - separates materials of varying density 16.pipette - used to transfer measured substances into another vessel 17.droppers - for addition of liquids, drop by drop

24.volumetric flasks - to measure precise volumes of liquid or to make precise dilutions. 25.wash bottles - for dispensing small quantities of distilled water. 26.watch glasses - for holding small samples or for covering beakers or evaporating dishes. 27.wire gauze on a ring - s beakers to be heated by Bunsen burners