question archive What is meant by positive and negative controls in biology?
What is meant by positive and negative controls in biology?
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What is meant by positive and negative controls in biology?
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Answer:
Negative control K (-) confirms that reagents, solutions of dyes, distilled water and immersion oil are not contaminated with acid-resistant microorganisms or artefacts.
Positive control K (+) is the sample with the known concentration(or optical density).
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