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Why is the level of contamination measured as number of colonies rather than size of colonies?
Wiki User
∙ 14y ago
Because it's like impossible to count them since there's just trillions and trillions and trillions of them, so it's easier to count the number of colonies.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoBecause the number of colonies gives an indication of the number of contaminants whereas the size of the colonies only lets us know how fast the contaminants grow.
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Why was universal indicator paper used to test the pH rather than placing universal indicator solution into the mixture?
Use of paper avoid the contamination of the sample.
