Unit 3 - Lab Safety

Question 1

What three methods can help minimize workplace hazards? Describe them and give an example

Answer 1

• Engineering controls – change the work environment [EX FUME HOOD]
• Administrative controls [EX. Creation of protocols to minimize worker
  exposure]
• Procedural controls – modify worker behaviour
  [Substitute less hazardous material if feasible]
• PPE

Question 2

What 16 items are on a safety data sheet?

Answer 2

1. Chemical Product and Company Information
2. Composition / Information on Ingredients
3. Hazards Identification
4. First Aid Measures
5. Fire Fighting Measures
6. Accidental Release Measures
7. Handling and Storage
8. Exposure Controls / Personal Protection
9. Physical and Chemical Properties
10. Stability and Reactivity
11. Toxicological Information
12. Ecological Information
13. Disposal Considerations
14. Transport Information
15. Regulatory Information
16. Other Information

Question 3

When is a workplace label required?

Answer 3

When a hazardous product is transfered or poured into another container

Question 4

What should a workplace label contain

Answer 4

Product name (Matching SDS name)
Safe handling precautions
A reference to SDS

Question 5

What is an SOP? What is the abbreviation

Answer 5

Standard Operating Procedures are used to provide clear quality work instructions

They describe materials, methods, and appropriate precautions

They force a person to THINK thru the procedure step by step

Question 6

What does an SOP contain?

Answer 6

 Instructions for procedure
 Personal safety equipment required
 Materials and equipment required
 Sample or material limitations
 Material disposal instructions

Question 7

How should SOP’s describe and instruct a procedure

Answer 7

 Be clear and simple to follow
 Be accurate and concise to execute
 Follow closely the sequence of actual
operating activities
 Be written with the intended audience in
mind

Question 8

What are common problems with SOP? Name 6 of them

Answer 8

 SOP says what to do, but not how to do it
 Procedure was written by someone who does not have experience doing the work
 SOP has too much or too little detail
 Procedure is not written in the order in which the tasks are actually performed
 The SOP is not updated
 Employees cannot find the right SOP or use an older version

Question 9

What can SOP’s be written for? Give 6 examples

Answer 9

 Operating instruments, apparatus, and other equipment
 Preparation of chemicals / reagents
 Inventory procedure for stock
 Disposal of hazardous materials, including sharps, chemicals, and biological materials
 Receiving and registration of specimens
 Archiving and dealing with complaints

Question 10

A solution contains 15 mL of hydrogen peroxide
per litre. Express this as a percent solution.

Question 11

How many milligrams of NaCl is present in 50 mL of a solution that is 2 mg/mL NaCl?