Laboratory techniques
From Simple English Wikipedia, the free encyclopedia
Laboratory techniques are the techniques of handling the various pieces of apparatus.
Contents |
[edit] Basic techniques
[edit] Handling of chemicals
Ways to dissolve a solid in a liquid or to mix two liquids in a test tube:
- Shake the test tube gently
- Stir with a glass rod
- Tap the bottom of the test tube with the forefinger
- Pour the contents to and fro between two test tubes
- Stopper the test tube and shake
[edit] Heating techniques
[edit] Collecting gases
there are various methods of collecting gases. some are listed below:
- Upward and downward delivery
- Over water
- Gas syringe
[edit] Drying substances
[edit] Smelling gases
- Never smell a gas directly.
- Always waft a gas towards yourself if it is reasonably safe to smell it.
- Never smell a gas that is toxic or otherwise dangerous.