IMO you need more data. Difficult to give an opinion based on 1 datum /area. ----
In a week time, data will show up/down trend on tpc results
Do you clean, check ATP, sanitize, check micro. or ??
Prior to production we will sanitize the machine and will do atp check and conventional swabbing
after production finish our cleaning procedure is as follow:
--rinse of the seasoning from the machine using hot water
--use an alkaline chlorinated detergent for foaming and leave it for approx 10 mins
-- rinsing the machine using normal water and afterwards put sanitizer
Were all the cleaned surfaces visually satisfactory ? yes
Are areas 1,2,3 likely to be similarly "contaminated" ? NO
ATP and micro.data are 2 ways of evaluating the "cleanliness" of a surface.
As noted in previous post microbiological testing may or may not correlate with ATP readings, since the two techniques measure different parameters. Microbiological methods detect residual micro-organisms (usually bacteria), which should decrease as a result of cleaning/sanitization (C/S). The magnitude of any decrease will depend on the method, materials and chemicals used. ATP bioluminescence is a measure of cleanliness that detects organic soiling (OS) (microbial and non-microbial ATP). (The non-microbial contribution to total ATP is frequently much greater than microbial.)
Despite the above comments, there are some published correlations also.
Verification cleaning efficiency, ATP vs micro..pdf
Ideally one would obviously like to achieve satisfactory results for both.
If all the data is representative of the routine C/S procedure and quantitatively reliable, suggests that -
Area 1 is OS unsatisfactory but micro.satisfactory (with respect to TPC/coliform)
Areas 2,3 are OS satisfactory but micro. unsatisfactory (with respect to TPC/coliform) (how much unsatisfactory depends on the quant. meaning of TNTC)
(I daresay you knew that already).
i suggest you should establish a baseline for both test procedures/sampling points/routine cleaning-sanitizing process. I think this is recommended by ATP unit suppliers.
Need to read more about this matter. thanks for the info.