1. General Chemistry Laboratory CHE116/CHE118
Safety Aspects for Lab Work to Supplement Student Laboratory Safety Contract
CHE116/CHE118

2. Inserting Glass Into Tubing
Glass tube into all-purpose tubing
Glass pipet into pipetter
Glass arm of filter flask into vacuum tubing
Glass thermometer into rubber stopper
CHE116/CHE118

3. Basic Technique
Always hold the glass tubing near the end being inserted, to prevent the breakage of the glass while it is inserted into tubing.
Wet the outside end of the glass tubing with deionized water (just a drop or two). This may make insertion into the tubing easier.
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CHE116/CHE118

4. Use a thick layer of paper towel around the glass to prevent cuts if the glass should break
CHE116/CHE118

5. Pipet and Pipetter
Pipet
Pipetter
CHE116/CHE118

6. Use proper technique to prevent cuts
Hold pipet near end to be inserted
Insert pipet into pipetter
CHE116/CHE118

7. Filter Flask and Vacuum Tubing
CHE116/CHE118

8. Push glass arm into tubing
Hold side arm near end
Push glass arm into tubing
CHE116/CHE118

9. Thermometer and Rubber Stopper
Hold thermometer near the end to be inserted
Insert into rubber stopper
(would be better with paper towel wrap)
CHE116/CHE118

10. Additional Safety Notes Acquiring Reagents
Wear gloves and goggles
Always dispense chemicals from stock bottles located in the fume hood. The safest place to have a chemical spill is in the fume hood.
Only take as much chemicals as needed to perform the experiment.
Label the receiving beaker.
After the experiment is finished, the chemicals (reactants and products) should be disposed of in the waste bottle located in the fume hood.
CHE116/CHE118

11. Fume Hoods and Reagents
CHE116/CHE118

12. Acids Acids are used frequently in CHE116 and CHE118.
Always wear gloves and goggles when handling any and all chemicals
When combining acid and water, always add acid to water; never add water to acid
CHE116/CHE118

13. For All Laboratory Work:
Always wear goggles and gloves during lab work. Take goggles off at the goggle cabinet.
Take the smallest amount of reagent necessary to your lab bench (if reagent is allowed outside of hood)
Clean up chemical spills immediately
Notify your lab instructor if you get any chemicals on you. An incident report will be written.
CHE116/CHE118