When Must Quality Control Be Performed When Using a Refractometer

question 4

Multiple Choice

When must quality control be performed when using a refractometer?

• A)At the end of the day
• B)By comparing values with tap water  
• C)Before testing each specimen
• D)At the beginning of each day

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Definitions:

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The branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.

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A logical fallacy involving an invalid argument structure where, from the premise that if P then Q, it is inferred that if not P then not Q.

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