![]() ![]() A high RLU reading indicates a large amount of ATP at the test location. The RLU reading is directly proportional to the amount of ATP collected from the sample. High contamination (improper cleaning) = Large amount of ATP = More light produced in reaction= High RLU reading on SystemSURE™ Plus, EnSURE™ or EnSURE™ Touch. The relationship between the amount of ATP in the sample and the RLU result reading on the luminometer is simple: ![]() (Comparing RLU values is like comparing Fahrenheit and Celsius they are two different scales for the same temperature). However, because the ATP bioluminescence reaction is linear, the more ATP present means the more light will be present. Because manufacturers use different sensor technologies and algorithms for adding up the photons, RLU measurements will vary from system to system. Luminometers measure and quantify that light as an RLU output. When a test swab is activated, a bioluminescent reaction occurs, generating light output. RLU stands for Relative Light Unit and is the unit of measure used in bioluminescence. The light is simply a byproduct of the chemical reaction and does not depend on light. ![]() The result is decay which is manifested as photon emission, or light production.
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