Lesson 7_Common Laboratory Apparatus.pptx

Common Laboratory Apparatus

1. COMMON LABORATORY APPARATUS

2. BEAKER Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations. 3

3. BUNSEN BURNER sources of heat

4. 6

5. 7

6. BURETTES for addition of a precise volume of liquid. The volume of liquid added can be determined to the nearest 0.01 mL with practice. 8

7. CLAY TRIANGLES placed on a ring attached to a ring stand as a support for a funnel, crucible, or evaporating dish.

8. 11

9. DROPPERS for addition of liquids drop by drop 12

10. Erlenmeyer Flasks useful to contain reactions or to hold liquid samples. They are also useful to catch filtrates.

11. 15

12. Glass Funnels for funneling liquids from one container to another or for filtering when equipped with filter paper. 16

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

14. 19

15. HOT PLATES can also be used as sources of heat when an open flame is not desirable. 20

16. Pipettes used to dispense small quantities of liquids.

17. 23

18. Test tube holders for holding test tubes when tubes should not be touched 24

19. Ring stand with Rings for holding pieces of glassware in place

20. 27

21. Test tubes for holding small samples or for containing 28

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

23. 31

24. 32

25. LABORATORY EQUIPMENTS

26. BALANCES used to determine the mass of a reagent or object. 34

27. Spectrophotometers used to measure the absorbance or transmittance of a liquid sample.

28. 37

29. Fume Hoods used to ventilate noxious or harmful gases. 38