Common Laboratory Glassware and Volumetric Glassware

1. Common Laboratory Glassware and Volumetric Glassware Prepared By Michigan Department of Environmental Quality Operator Training and Certification Unit

2. GLASSWARE Graduated Cylinder Griffin Beaker Erlenmeyer Flask Graduated Pipet

3. GLASSWARE Approximate Graduations Griffin Beaker

4. GLASSWARE Approximate Graduations Erlenmeyer Flask

5. GLASSWARE Graduated Cylinder Used for Routine Volume Measurements of 25 mL or Greater

6. GLASSWARE Wide Tip Use When Solids in Sample Used for Routine Volume Measurements of 25 mL or Less Graduated Pipet

7. GLASSWARE Wide Tip Use When Solids in Sample NOT VOLUMETRIC Graduated Pipet

8. Volumetric Glassware Required for High Accuracy and Precision Required When Preparing or Using Standard Solutions

9. Volumetric Glassware Accuracy and Precision Standard Solutions Volumetric Flask Buret Volumetric Transfer Pipet

10. VOLUMETRIC GLASSWARE Must Be Used Properly

11. BURET

12. BURET To Deliver Calibration Temperature

13. Rinse With Titrant Completely Coat Inside Surface

14. Beads of Liquid Not Clean

15. Rinse Three Times Fill to Above Top Graduation

16. Discharge All Air Bubbles

17. Drain Until Top of Liquid Is In Graduations

18. MENISCUS Curved Surface of Liquid

19. MENISCUS READER

20. Proper Reading X O X

21. Bottom of Meniscus to Top of Graduation

22. Ten Graduations Increase }

23. 24.16 9.64

24. Proper Grip Record Initial Reading Add Indicator

25. Mix Well Near Endpoint

26. Split Drops Transfer To Flask Rinse Into Reaction

27. At Endpoint Record Final Reading Read Final Reading – Initial Reading = Volume Delivered

28. Properly Dispose Excess Properly Clean Air Dry

29. Proper Storage

30. Volumetric Transfer Pipets

31. Volumetric Transfer Pipets One Calibration To Deliver Calibration Temperature

32. Fill By Vacuum

33. Fill By Vacuum Rinse Pipet Bulb

34. Must Drain Evenly Not Clean

35. Wipe Tip Touch Container To Remove Drop Fill Above Calibration Drain To Calibration

36. Some Will Remain In Tip Allow To Drain Touch Tip To Flask

37. Exception ETCHED Ring NOT Painted FOR BLOW-OUT

38. Air Dry Properly Clean

39. Using Volumetric Pipets 1. Rinse with solution to be pipeted (Observe for even draining) 2. Fill to above graduation 3. Wipe off outside of pipet 4. Drain to graduation ( bottom of meniscus to top of graduation) 5. Touch tip to waste vessel 6. Transfer by gravity (vertical - don’t force) 7. Touch tip to inside of receiving flask (clean pipet)

40. Volumetric Flasks

41. To Contain TC NOT Intended To Deliver

42. To Prepare Solutions With Accurately Known Concentration

43. Fill Drop-wise To Calibration Fill Half And Mix Fill To Below Graduation

44. Invert Rapidly

45. Properly Clean Transfer To Reagent Bottle Air Dry

46. Volumetric Glassware Accuracy and Precision Standard Solutions Volumetric Flask Buret Volumetric Transfer Pipet

47. Common Laboratory Glassware and Volumetric Glassware Prepared By Michigan Department of Environmental Quality Operator Training and Certification Unit