CMLA REE CMLA Laboratory Safety & Procedures 2

Question 1

Which class of fire extinguisher is appropriate for electrical equipment fires in the laboratory?

Accepted Answer

Class C

Answer

Class C extinguishers are designed for electrical fires and use non-conductive agents that won't cause electrocution.

Question 2

A sharps container should be sealed and disposed of when it is:

Accepted Answer

Three-quarters full

Answer

Sharps containers should be sealed and replaced when they reach three-quarters full to prevent overfilling and needlestick injuries.

Question 3

What does the NFPA 704 diamond's blue quadrant indicate?

Accepted Answer

Health hazard

Answer

The blue (left) quadrant of the NFPA 704 diamond represents the health hazard rating on a scale of 0–4.

Question 4

When centrifuging potentially infectious specimens, which safety measure is mandatory?

Accepted Answer

Using safety-capped centrifuge tubes or sealed rotors

Answer

Safety-capped tubes or sealed rotors contain aerosols and prevent release of infectious particles if a tube breaks during centrifugation.

Question 5

A chemical spill of a corrosive acid on the skin should FIRST be treated by:

Accepted Answer

Rinsing with large amounts of water for at least 15 minutes

Answer

Immediate and prolonged water rinsing (≥15 minutes) dilutes and removes the acid before it causes further tissue damage.

(CMLA) Certified Medical Laboratory Assistant Practice Test