Laboratory Science Lab Safety and Equipment 3

Question 1

What color coding is used for biohazardous waste bags in US laboratories?

Accepted Answer

Red or orange

Answer

Red or orange biohazard bags are used for infectious waste to clearly identify materials that require special handling and disposal.

Question 2

Which agency regulates the transport of infectious substances in the United States?

Accepted Answer

DOT (Department of Transportation)

Answer

The DOT regulates the packaging, labeling, and transport of infectious substances under 49 CFR, ensuring safe shipment of diagnostic specimens.

Question 3

What is the purpose of a biological safety cabinet (BSC) Class II Type A2?

Accepted Answer

Protection of both the worker and the sample from contamination

Answer

Class II Type A2 BSCs recirculate HEPA-filtered air to protect both personnel and the work product from biohazardous aerosols.

Question 4

How often should laboratory safety eyewash stations be flushed and inspected?

Accepted Answer

Weekly

Answer

ANSI Z358.1 recommends weekly activation of eyewash stations to verify proper operation and flush stagnant water from supply lines.

Question 5

Which PPE item is most important for preventing aerosol inhalation during specimen processing?

Accepted Answer

N95 respirator or higher

Answer

An N95 respirator or higher filters airborne particles and aerosols generated during specimen processing, preventing inhalation of infectious agents.

Laboratory Science Practice Test