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Flammable Materials
Flammable materials, like types of alcohol, should never be
dispensed or used near an open flame
by Gayle Hayes
What if there is a fire?
If a laboratory fire erupts, immediately notify your instructor.
A fire extinguisher and fire blanket are located on the wall near the entry door.
If instructed to leave the lab, leave immediately through the nearest exit door (there are three in
our lab).
by Gayle Hayes
Eye Protection - Goggles
Approved eye protection devices (such as splash goggles) are worn in the laboratory any time
chemicals, heat or glassware are used.
by Gayle Hayes
Contact Lenses
If you wear contact lenses in the school laboratory, advise your science instructor that you
wear contact lenses.
by Gayle Hayes
Make Sure You Understand
If you do not understand a direction or part of a lab procedure, ask the instructor before
proceeding.
Do not begin the lab until the instructor advises you to do so, and never when the instructor is out
of the room.
by Gayle Hayes
Disposal of Chemicals
After completing an experiment, all chemical wastes should be disposed of according to your
instructor’s directions.
No unauthorized experiments are allowed.
by Gayle Hayes
What if I Don't Finish My Experiment?
If a lab experiment is not completed, you should discuss the issue with your instructor.
by Gayle Hayes
Heating in a Test Tube
You are heating a substance in a test tube. Always point the open end of the tube
away from all people.
by Gayle Hayes
Hot Glassware Looks Like Cold Glassware
You are heating a piece of glass and now want to pick it up. You
should use tongs.
If glassware breaks, stop what you are doing and tell your
instructor immediately. Do not clean up broken glass yourself.
by Gayle Hayes
Injuries in the Lab
You have been injured in the laboratory (cut, burn, etc.). Don't just ignore it...
You should tell the science instructor at once!
by Gayle Hayes
Before You Use Glassware...
When gathering glassware and equipment for anexperiment, you should...
read all directions carefully to know what equipment is necessary.
examine all glassware to check for chips or cracks.
clean any glassware that appears dirty.
by Gayle Hayes
Inserting a Glass Tube in a Stopper
You want to place a piece of glass tubing into a rubber stopper after the tubing has been fire polished and cooled. This is best done by...
lubricating the tubing with water or glycerin and twisting the tubing and stopper carefully
and using a towel or cotton gloves for protection..
by Gayle Hayes
Why Can't I Just Wear My Eyeglasses?
Personal eyeglasses do not provide as much protection as goggles, especially from splashes or
shattered glass.
by Gayle Hayes
Pull Back Long Hair
Long hair in the laboratory must betied back or kept entirely out of the way with a hair
tie.
by Gayle Hayes
Proper Attire
Loose clothing, open-toe shoes, dangling jewelry are all potential hazards in the lab, and should not
be worn.
You have access to an apron to protect your clothing in labs that require one. Aprons are not
required for every lab.
NO! NO!
by Gayle Hayes
No Horsing Around
Horseplay or practical jokes in the laboratory are always against the rules and can result in
suspension of lab privileges.
by Gayle Hayes
Faulty Equipment
If a piece of equipment is not working properly, stop,
turn it off, and tell the science instructor.
by Gayle Hayes
Acid on Your Skin
If an acid is splashed on your skin, wash at once plenty of plain water (not soap).
by Gayle Hayes
All Substances are Assumed Dangerous
Even if a reagent is a food item, never eat, drink, taste or directly smell a substance used in the lab.
NO!!
by Gayle Hayes