Laboratory Science Lab Safety and Equipment 2

Question 1

What is the correct technique for pipetting a caustic chemical to prevent accidental ingestion?

Accepted Answer

Mechanical pipette aid or bulb

Answer

Mouth pipetting

Answer

Thumb-capping

Answer

Finger aspiration

Question 2

Which autoclave cycle parameter is standard for sterilizing aqueous solutions?

Accepted Answer

121°C for 15 minutes at 15 psi

Answer

100°C for 30 minutes at 1 atm

Answer

134°C for 3 minutes at 30 psi

Answer

150°C for 10 minutes at 20 psi

Question 3

What does SDS stand for in laboratory chemical safety?

Accepted Answer

Safety Data Sheet

Answer

Standard Dilution Sheet

Answer

Solvent Disposal Summary

Answer

Sterilization Directive Schedule

Question 4

When using a centrifuge, what is the most important safety precaution?

Accepted Answer

Balance opposing tubes with equal mass

Answer

Run at maximum speed always

Answer

Keep the lid open during operation

Answer

Never use with biological samples

Question 5

Which waste container is appropriate for disposing of sharps in a clinical laboratory?

Accepted Answer

Rigid puncture-resistant sharps container

Answer

Regular trash bin

Answer

Red biohazard bag

Answer

Chemical waste drum

Question 6

What is the minimum eye wash station flush time recommended by ANSI standards after a chemical eye exposure?

Accepted Answer

15 minutes

Answer

1 minute

Answer

5 minutes

Answer

30 minutes