Lab Safety for Chemical Labs
must be responsible enough to look out for everyone else in lab.
No horse-play allowed, EVER. Lack
of pre-lab preparation is the biggest problem related to lab safety.
If you or your group members are unprepared for lab you will waist time
and be more inclined to make mistakes.
Safety Glasses must be worn any time you are in lab.
Contact lenses should NOT be worn during chemical labs.
|It is almost
impossible to remove contacts after chemicals have been splashed into the
trapped under contacts will damage the eye even more than normal.|
|The plastic used
for some types of contact lenses is permeable to vapors found in the
laboratory. If these vapors are
trapped behind the lens, extensive irritation may occur.|
All students will be notified of upcoming lab at least one day in advance.
Long hair, bulky clothing, rings, watches, dangling
jewelry are dangerous in lab.
long hair should be tied back using some type of hair clip
loose clothing should be avoided the day of lab (big sleeves,
collars that hang down, neck ties, etc.)
dangling jewelry should be removed during lab (ear rings,
Accidents Can Happen:
Remain calm and report it immediately to the teacher.
|Stop and report it immediately. Do
not move until your teacher says it is safe to do so.
There may be small bits of glass that you do no notice. |
|Your teacher will collect the broken glass, not you.
More minor cuts occur after this type of accident than during it.|
|Chemical spills are often involved with glass breakage.
Follow those rules if it occurs.|
Cuts and Scrapes:
|Report the situation to the teacher and let her help the injured person. |
|There is always a possibility of infection.
For this reason you should report any cut or scrape, even if there is
no visible blood.|
|Do not come into contact with another’s person’s blood.|
|If there is blood at any lab station, everyone is to turn
off all burners and move to your seat in the classroom area until told it is
safe to return to the lab.|
|Depending on the chemical spilled, we might just have to clean it up or we
might have a more dangerous situation.|
|The most potentially dangerous chemicals used in our lab are corrosive
acids and bases. Even though
you will be using chemicals that have been diluted, you should always treat
acids and bases with care.|
|You are to treat all spills as DANGEROUS.|
|Stay where you are and let your teacher advise you about what to do.|
|We will discuss methods for treating different types of spills in class.|
|Remember that broken glass often occurs along with chemical spills.
Be prepared to follow those guidelines as well.|
|Bunsen burners: if a
malfunction occurs, turn off the burner and notify your teacher.|
|When you are not actively heating something – turn the burner off.|
|Someone in your group must always be watching the flame (the watcher of
|If a paper fire occurs, push the paper into the lab sink and turn on the
|Clothing or Hair: Don’t
panic: If you are involved,
stay where you are – help is coming.
Your partners should get the fire blanket.
Everyone else should stay away.|
|The teacher is the only authorized person to use the fire extinguisher.|
Lab Safety Equipment
Eye Wash Station:
|The station should only be used if chemicals come in contact with the
|Eyelids have to be forcibly opened to ensure effective washing behind the
|Be sure to wash from the nose out to the ear.
This will avoid washing chemicals back into the eye or into an
|Flood eyes and eyelids with water for a minimum of 15 minutes.|
|Contacts should not be worn during labs.
If you are wearing them when involved with an accident, remove them
as soon as possible to rinse eyes of any harmful chemicals.|
|After the teacher determines that the eyes are completely flushed, both of
the student’s eyes should be covered with a clean or sterile gauze.|
|It provides an effective means of treatment in the event that large
amounts of chemicals are spilled or splashed onto the skin or clothing.|
|As long as the handle is pulled down, the safety shower will supply a
continuous stream of water to cover the entire body.|
|Individuals should remove clothing, including shoes and jewelry, while
under an operating shower.|
|Fire blankets are not the best means to extinguish a fire.
They may be used to extinguish clothing that is burning, but should
never be used on any other type of fire.|
|Fire blankets are a good means to keep shock victims warm or to cover
large chemical spills.|
|Fire extinguishers are classified according to a particular fire type and
are given the same letter and symbol classification as that of the fire.|
|Type A – combustible wood, cloth, paper, rubber,
|Type B - flammable liquids,
oil, grease, and paint thinners.|
|Type C - energized electrical
|Type D - combustible metals
(Mg, Ti, Na, Li, K)|
|Multipurpose Extinguishers are effective against types A, B, and C fires|
|To effectively operate an extinguisher, think P-A-S-S|
pull the pin|
|A-- aim the hose a the base of the
|S – squeeze the handle|
|S – sweep the hose back and
|Never use water on a Type B fire. These
liquids float on water and water can spread the burning liquid.
Water makes hot grease splatter, and can cause burns.
Cover the burning grease with sand or baking soda (sodium
|Never use water on a Type C fire. Water
can cause a severe electric shock. |
FIRE EXTINGUISHER OPERATION:
P ULL THE
SAFETY PIN ON THE EXTINGUISHER
A IM AT
THE BASE OF THE FIRE
THE HANDLE TO DISCHARGE AGENT
FROM SIDE TO SIDE
Fire Alarm Station:
|Be able to locate the nearest fire alarm pull station in case of an
Be able to locate the container with lid designated for
Know where the box for broken glass is kept.
|Be able to locate all exits and know the fire escape plan for your
Being Prepared Checklist for school:
|Know all exits.|
|Practice drills seriously.|
|Know locations of safety equipment and extinguishers.|
|Report any safety hazards to the teacher.|
|Be sure smoke detectors work.|
Common Sense Guidelines:
|Stay calm. Help others to
|Notify a teacher immediately.|
|Avoid smoke-filled passageways. If
you must pass through a smoke-filled area, crawl on hands an knees.
If possible, wrap a wet towel around your nose and mouth.|
|Close doors when leaving an area. Never
open a door that is hot to the touch.|
|If your clothes do catch fire, DO NOT RUN.
Roll on the floor or wrap yourself in a fire blanket or rug.|
Take the safety test