Auditors and food safety inspectors are now recognising the A3 system as a more comprehensive and reliable hygiene testing method. The A3 system differs from traditional ATP meters by detecting adenosine molecules in all three forms mentioned above: ATP, ADP and AMP.
Using patented technology, the surface swabbing and measuring process is identical to standard ATP meters, with just one test swab, however the meter gives a combined reading of the levels all three molecules. Regardless of what stage the adenosine molecules are at in their reactions, they will be measured by the A3 system and the resulting RLU reading will be a more accurate reflection of how clean the surface is.
This is particularly noticeable in meat, egg, seafood and nuts, as shown in the graphs below: