lab safety by dr. ashok kumar j
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Lab personaelTRANSCRIPT
LABORATORY SAFETY
Dr. Ashok Kumar Jeppu
Biochemistry Unit
International Medical School
Management and Science University
Malaysia
Doing things safely is not merely the right way to
work
- it is the only way
In order to have fun doing science experiments, you need to be aware of the dangers and hazards in the laboratory.
Important to
respect the
safety of yourself
and others in the lab
To do this, follow the
safety precautions
THINK SMART. BE SAFE.
Cooperation
Responsibility
concern
Safety First
Lab Safety
What do you think is the most dangerous thing in any laboratory?
The most dangerous thing in any laboratory is someone who doesn’t
know what they are doing
If you don’t know how to use it or don’t know what it is for
• Pencil
• Coin
• You name it…
Accident often result from
An indifferent attitude
Failure to use common sense
Failure to follow
instructionsmaking
GENERAL SAFETY RULES
NO HORSING AROUND!• Never “horse around” or play practical jokes in
the laboratory
• The laboratory is not a place for being silly.
• Focus on completing your experiment correctly and safely
• You should always conduct yourself with mature and appropriate behavior.
Secure loose sleeves or other loose articles of clothing, such as ties and bows.
TIE BACK LONG HAIRTie back long hair and loose clothing
when working near an open flame : Roll up long sleeves
During lab work, keep your hands away from your face
Don’t wear open-toed shoes or sandals in laboratory situations
Never put anything into your mouth during a lab experiment
Never eat, drink, or apply cosmetics in a laboratory setting;
food, drink, and cosmetics can easily become contaminated with
dangerous chemicals
Follow the safety instructions carefully
• Become thoroughly acquainted with the location and use of safety equipment and facilities such as
• Exits
• Safety shower
• Eyewash fountains
• first aid kit.
Notify your teacher if any accidents occur
Keep your work area uncluttered Take to the lab station only what is necessaryClean up your lab area after you are finished
Chemical Safety
• Wear SAFETY APRON
•Wear protective goggles whenever heating or pouring hazardous chemicals
•Make sure an emergency eyewash station is available in the laboratory
Chemical Safety
After handling chemicals, always wash your hands with soap and water.
Chemical Safety
Never mix chemicals together unless you are told to do so
Chemical Safety
Follow the instructions of your teacher when disposing chemicals
Never mix chemicals for the “fun of it.” See unauthorized experiments
Use only the chemicals need for an investigation. Keep all lids closed when a chemical is not in use. Notify
teacher if spills occur.
Chemical Safety
• Dispose of all chemicals as instructed by teacher. To avoid contamination do not return chemicals to their original containers
• Be careful when working with chemicals such as acids or bases. Always pour them over the sink rather than over your work area
• When diluting an acid always add small amounts of Acid to Water. A to W. Awww. W to A. WAAAAA!
• Rinse acids or bases off of skin immediately. Notify teacher immediately of spills.
Chemical Safety
• Do not inhale fumes directly.• When instructed to smell a substance,
wave or waft fumes toward your nose and inhale gently.
Chemical Safety
Never taste any chemicals
Before undertaking any work become familiar with the hazards of the chemicals involved
Chemical Safety
Glassware Safety
Glassware Safety
• Become familiar with the hazards of the apparatus and the operations involved
• Check the condition of glassware before and after using it.
• Inform your teacher about any broken, chipped, or cracked glassware; it should not be used.
• Do not pick up broken glass with your bare hands.
Glassware Safety
• Never force glass tubing into rubber stoppers
• Never place glassware near edges of your work surface.
• Never eat or drink out of lab glassware
• Hot glass does not look hot. Don’t pick up any glassware
that may have been heated without checking to see if it is
hot first
Using Sharp Instruments
• Handle scalpels and razor blades with extreme care.
• Never cut material toward yourself or others. Cut away
from you and others.
• Notify your teacher if you cut yourself.
Electrical Safety
• Keep electrical cords away from areas where someone may trip on them or where the cords can tip over laboratory equipment.
Electrical Safety
•Never handle electrical equipment with wet hands.
•Be sure your hands and your lab area are dry before using electrical equipment
Electrical Safety
Electrical Safety•Never poke anything into electrical outlets
•Unplug cords by pulling the plug and NOT the cord
•Turn off and unplug all electrical equipment as soon as you are finished using the equipment.
Heating Safety
Heating Safety
1. Let hotplates cool down before touching them. Test to see if they are cool enough by bringing the back of your hand close to them.2. Use tongs to handle hot objects.3. The only type of glassware that may safely be heated is either Kimax or Pyrex.4. Never heat anything that you are not instructed to heat
Heating Safety
•Never heat a closed container
•Point test tubes or bottles that are being heated away from you and others. Chemicals can boil or splash out of the tube
•Only glassware that is thoroughly dry should be heated.
•Never leave a hotplate unattended.
Fire Safety
Fire Safety• Make sure that fire extinguishers and fire
blankets are available in the laboratory
• Tie back long hair and confine loose clothing
• Wear safety goggles when working with flames
• Never reach across an open flame
• Make sure you know how to light a Bunsen
burner. If you do not your teacher will show
you
• Make sure water, gas burners, and electric hot plates are turned off. Hot plates and other electrical equipment should also be unplugged.
First Aid
Injury: BurnsTo do: Immediately flush with cold water until burning sensation is lessened
First Aid
Injury: CutsTo do: Do not touch an open wound without safety gloves. Pressing directly on minor cuts will stop bleeding in a few minutes.
First Aid
Injury: FaintingTo do: Provide fresh air and have the person recline so that their head is lower than the rest of their body.
First Aid
Injury: The eyesTo do: Flush eyes immediately with plenty of water for several minutes. If a foreign object is lodged in the eye, do not rub the eye.
Radioactive Biohazard
Symbols
Dress Code
1.Wear a lab coat or apron when directed
2.Wear safety goggles when directed.
3.Tie back loose hair whenever chemicals or
open flames are being used.
4.Do not wear loose, baggy clothing or loose
jewelry (ID badge lanyards) when working with
chemicals or open flames.
Lab Safety Rules
General Safety
• Listen and follow directions• No Monkey or Horseplay• Don’t eat or drink without permission• Keep your hands and place dry• Touch electrical instruments with dry hand• Be careful with hot or electrical appliances
Lab Safety Rules
•Tell your teacher if anything breaks or spills•Clean your desk before and after experiments•Wash your hands•Handle animals with care and respect
•Report all accidents, no matter how minor,
immediately to the teacher.
•Know what to do in the case of specific
accidents such as acid spills, fires, or chemicals
on skin or in eyes.
To Summarize
1. Use common sense.
2. Follow the teacher’s
directions.
3. If you don’t know, ask.
4. Do the right thing.
Thank You
BE SMART! THINK SAFE!
And now for a quiz…Choose the best answer for the following questions.
1.When in the lab, you must always wear
a)Long socks
b)Eye goggles
c)A hard hat
2.When is food and drinks allowed in the lab?
a)When you are hungry or thirsty
b)Anytime
c)Never
True or False?
3. _____You can keep your hair down during labs.
4. _____You should read the directions for a lab once before beginning.
5. _____If you don’t know what you are supposed to do in a lab, you should ask the teacher.
6. _____If a minor accident occurs, you do not have to notify the teacher.
Matching: Write the letter of the missing key word on the blank in front of the statement.
a) Equipment
b) Horseplay
c) Sleevesd) Hands
Key Words
Statements
7. Roll up long ________.8. Return all ________ to its proper place.9. Wash your ______ at the end of all labs.10. Do not engage in ________ in the lab.