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Question: Why is ATP a good measurement of the cleanliness of a surface or water sample?
Answer:
The relationship between the amount of ATP on the sample and the RLU result reading on the luminometer is simple:
High contamination (improper cleaning)
=
Large amount of ATP
=
More light produced in Ultrasnap reaction
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High RLU reading on SystemSURE II
The RLU reading is directly proportional to the amount of ATP collected from the sample. A high RLU reading indicates a large amount of ATP at the test location. This in turn indicates improper cleaning and the presence of contaminants.
Cleaning properly results in less ATP at the location. Less ATP results in less light output during the bioluminescent reaction and consequently, a lower RLU reading.
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