What is the function of a shaker in the laboratory?
A. Mix small vials of liquids in a quickly oscillating circular motion
B. Grow and maintain microbiological or cell cultures
C. Produce an updraft to force airborne contaminants away
D. Measure the volume of liquids
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What is the main function of a spectrophotometer in the laboratory?
A. Measure the absorbance of light by a substance
B. Visualize small particles
C. Count the number of colonies of microorganisms
D. Separate fluids based on density
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