Zelda L. Kravitz
The purpose of your first series of experiments is to introduce you to methods to be used in the laboratory, learn how to work safely in the laboratory, learn the proper skills, and how to handle materials in the laboratory.
We try to be very neat. Don’t spill. Return spoons, stoppers,
only
to bottles they belong to.
Don’t
mix chemicals, or solutions unless so directed. Things spilled should be wiped up.
Safety
and
caution
are the keywords.
To prepare for an experiment:
-
1. Always read directions until you understand them. Do your homework to prepare for an experiment.
-
2.
Never
start an experiment until you are sure what to do.
-
3. Ask for assistance if in doubt.
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4. Liquid wastes go into the sink.
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5. Solid wastes go into separate containers.
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6. Returned equipment or used equipment must be left
clean
.
-
____
a. clean test tubes are put on draining rack.
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7. DON’T TASTE ANYTHING UNLESS TOLD. SOME SUBSTANCES MAY BE HARMFUL.
-
8. IF ACIDS ARE USED AND SPILLED
RINSE
immediately, call instructor AND NEUTRALIZE (MAKE WEAKER) WITH A BASE.
-
9. Acid on body, rinse with water, wash with soap, CALL instructor.
-
10. Alkali on body rinse with water, wash usually with vinegar, CALL instructor.
If substances fall on desk, always leave clean or neutralized.
Sloppy handling of materials may result in expulsion from the laboratory.
Supplies and equipment cost money. Careless use can cause you to lose credit for your work, and pay for broken equipment.
