personal protective equipment students wear approved safety goggles or safety glasses when in the...
TRANSCRIPT
Personal Protective Equipment
students wear approved safety goggles or safety glasses when in the lab. This is an absolute
The following is acceptable!
"MUST"!
Not
Proper attire1 -floppy
garments; avoid things that dangle.
2 -long, loose hair
styles for the same reason.
3 -footware; so avoid sandals, thongs
Avoid
Avoid
Avoid
Food and drink are NOT permitted in the lab!
YOUR HEALTH IS IMPORTANT
or in Lab No EATING DRINKING
Avoid Horseplay
In a laboratory setting, horseplay, even if good-natured, is.
. absolutely unacceptable
No pushing; no shoving
Playing can be dangerous
WHAT NOT TO DO
drink from lab equipment .
NOT EVEN distilled water
know what another person might have added to the "distilled water" jug
DO NOT You do not
Things to Do Before Lab
Read the experimental procedure ahead of lab. An unprepared student is a danger to herself
and TO OTHERS.
Broken Glass: DON'T throw broken glass into the waste basket.
It Can Hurt You
DO use a special thick-walled container for broken glass. (If you don't happen to have one, an old milk
carton is a good substitute.)
A Simple Carton is OK
Laboratory Safety Equipment
Laboratory Safety Equipment
Laboratory Safety Equipment
First Aid Kit 1-
It may save a life!!
Laboratory Safety Equipment
2-Fire Extinguisher Operation
Every lab should have one
Laboratory Safety Equipment
2-Fire Extinguisher Operation
USAGE:
Twist the "KEY" to break the stiff Nylon
retaining cord then pull "KEY" out
Practice before, it may save your life !
Laboratory Safety Equipment
Raise the nozzle in order to direct the stream of carbon dioxide
2-Fire Extinguisher Operation
USAGE:
Direct nozzle to right place
Laboratory Safety Equipment
Squeeze the handle to begin operation .
2-Fire Extinguisher Operation
USAGE:
IT IS EASY TO USE
Laboratory Safety Equipment
If you or a labmate is on fire ..go (or direct her) to the entrance doorway to the lab. Find and pull the brass ring. Many gallons of water will be dumped from the shower on the ceiling to extinguish the blaze instantly.
Safety Shower3-
Laboratory Safety Equipment
If you get a chemical in your eye ..wash it out immediately! Use the eyewash fountains (but run some water through before you wash your eye). Retract your eyelid (do not squint ..it restricts water access). Afterward, go to the health center. Take your lab book so that the medical personnel can know with what you were working at the time of the accident.
Fountain Eyewash 4-
Laboratory Safety Equipment
Yank the blanket out of the wall holder .
Wrap it around the victim to smother the fire .
Fire Blanket 5-
Material Safety Data SheetsMaterial Safety Data Sheets
When a chemical is purchased, the supplier will send a MSDS sheet. The MSDS sheet lists the known dangers of the chemical in question.
Your school should keep a file of MSDS sheets.
Many people feel that the MSDS sheets overstate the
dangers. Make sure you use the right MSDS sheet for the right
chemical, as many chemical names sound
similar. The catalogs of major
suppliers also list useful safety information.
use a rubber bulb to create a vacuum
When using pipets, suck the liquid into the pipet directly by mouth .
Frequent mistakes, even with skilled lab workers, lead to
the liquid reaching the mouth .
PipetsDO NOT
Do
For even more dangerous liquids, thick "nitrile" gloves should be used. These are very safe, but heavy and ungainly. Also, they become slick, when wet, and it
is easy to drop things.
cream-colored latex gloves (see photo) are no longer recommended. "Vinyl" gloves or "nitrile" gloves (often green or blue in color) are preferred.
Handling of Acids or Bases
BE Careful
Acid and Water
DO NOT add WATER to CONCENTRATED ACID .
The heat generated may cause splattering .
DO add ACID to WATER instead of the reverse order of addition.
The heat generated will be less, but splattering still may occur
TESTING of ODORS:
If you absolutely must test the odor, carefully waft the
vapor from the flask toward your nose with your hand.
Keep the flask quite distant from your face.
Do NOT smell the flask directly.
Bunsen Burner Usage
1-Make sure the rubber hoses are firmly attached .
Both at the gas outlet2- and at the burner .
Otherwise, the flame may "strike-back."
Ask your teacher what3- this term means
Bunsen Burner Usage
Turn up the gas flow until you hear a gentle flow of
gas.
Light the burner by bringing the match UP from the base toward the burner
nozzle .
Bunsen Burner Usage
The match should be quenched with water, NOT thrown into the waste directly .
Fires may occur .
Proper Heating Of Glass Tubing Or Rods
Proper heating of glass tubing or glass rods in
order to bend it:
Remember NOT to hand the red-hot glass rod to another
person, especially the teacher.
Beware of the Flame!!
Heating Of Test Tubes
A better technique: Make sure that reaction tubes, e.g. test tubes, are not
directed toward yourself or other persons .
The chemicals may splatter out the tube .
Keep away from fume
Use of the FUME HOOD
the HOOD for reactions that give
off vapors, especially smelly
vapors.
The draft of the HOOD will sweep away vapors so
that the lab itself maintains
reasonable air quality.
At the End of the lab period:
Exit the lab in an orderly manner.
running, no pushing, no shovingAgain: no
Prepared by:“Sana Al-Arab” Al EnazyPrepared by:“Sana Al-Arab” Al Enazy
Supervised by:Dr.OMAIMA ALAM EL-DIN
Supervised by:Dr.OMAIMA ALAM EL-DIN