What is the purpose of a biosafety cabinet or inoculation unit in the laboratory?
A. Produce an updraft to force airborne contaminants away
B. Protect personnel against biohazardous or infectious agents
C. Count the number of colonies of microorganisms
D. Aseptic transfer of microbial culture
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What is the purpose of a pH meter in the laboratory?
A. Separate fluids based on density
B. Measure the pH level of a solution
C. Produce an updraft to force airborne contaminants away
D. Count the number of colonies of microorganisms
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