22. If you or your lab partner is hurt, immediately (and loudly) yell out the teacher's name to get the teacher's attention. Do not panic.
23. If a chemical should splash in your eye(s) or on your skin, immediately flush with running water for at least 20 minutes. Immediately (and loudly) yell out the teacher's name to get the teacher's attention.
24. All chemicals in the laboratory are to be considered dangerous. Avoid handling chemicals with fingers. Always use a tweezer. When making an observation, keep at least 1 foot away from the specimen. Do not taste, or smell any chemicals.
25. Check the label on all chemical bottles twice before removing any of the contents. Take only as much chemical as you need.
26. Never return unused chemicals to their original container.
27. Never remove chemicals or other materials from the laboratory area.
28. Never handle broken glass with your bare hands. Use a brush and dustpan to clean up broken glass. Place broken glass in the designated glass disposal container.
29. Examine glassware before each use. Never use chipped, cracked, or dirty glassware.
30. If you do not understand how to use a piece of equipment, ASK THE TEACHER FOR HELP!
31. Do not immerse hot glassware in cold water. The glassware may shatter
32. Do not operate a hot plate by yourself. Take care that hair, clothing, and hands are a safe distance from the hot plate at all times. Use of hot plate is only allowed in the presence of the teacher.
33. Never look into a container that is being heated.
34. Do not place hot apparatus directly on the laboratory desk. Always use an insulated pad. Allow plenty of time for hot apparatus to cool before touching it.
35. Heated glassware remain very hot for a long time. They should be set aside in a designated place to cool, and picked up with caution. Use tongs or heat protective gloves if necessary.
23. If a chemical should splash in your eye(s) or on your skin, immediately flush with running water for at least 20 minutes. Immediately (and loudly) yell out the teacher's name to get the teacher's attention.
24. All chemicals in the laboratory are to be considered dangerous. Avoid handling chemicals with fingers. Always use a tweezer. When making an observation, keep at least 1 foot away from the specimen. Do not taste, or smell any chemicals.
25. Check the label on all chemical bottles twice before removing any of the contents. Take only as much chemical as you need.
26. Never return unused chemicals to their original container.
27. Never remove chemicals or other materials from the laboratory area.
28. Never handle broken glass with your bare hands. Use a brush and dustpan to clean up broken glass. Place broken glass in the designated glass disposal container.
29. Examine glassware before each use. Never use chipped, cracked, or dirty glassware.
30. If you do not understand how to use a piece of equipment, ASK THE TEACHER FOR HELP!
31. Do not immerse hot glassware in cold water. The glassware may shatter
32. Do not operate a hot plate by yourself. Take care that hair, clothing, and hands are a safe distance from the hot plate at all times. Use of hot plate is only allowed in the presence of the teacher.
33. Never look into a container that is being heated.
34. Do not place hot apparatus directly on the laboratory desk. Always use an insulated pad. Allow plenty of time for hot apparatus to cool before touching it.
35. Heated glassware remain very hot for a long time. They should be set aside in a designated place to cool, and picked up with caution. Use tongs or heat protective gloves if necessary.
Comments
Post a Comment