Yes I am talking about the compressed air because it is registered as material when I do ISO 22000 certification. It does not matter what standard is involved because I can't find any.
My concern is because the compressed air we used in the blowing process is direct from the air outside and only depend on the filter inside the machine since the area considered low risk so we are not using HEPA filter. I bet this will only safe for physical hazard not the microbiology.
Currently, I tested the air with TPC parameter it shows 1.7 x 103 cfu/m3, E. coli 0 cfu/m3 and Yeast & mould 6.7 x 102 cfu/m3
If the limit refer to health working environment regulation which TPC should be less than 700 cfu/m3 it would not passed. But I look for the standard closer to food safety regulation so I will know how far the correction should be.
Thks yr clarification.
The answer to my query (b) is apparently iso22000:2018 so I have started a new thread/sub-forum. (unfortunately there is (surprisingly) no ISO22000 forum for food packaging although I can recall several related threads in the fssc22000 sub-forum (which also use iso22000 of course).
I will assume comp.air (CA) requirements are same as implemented for food.
There are numerous threads here on this topic for food, particularly originating in SQF Standard. Offhand, I don't recall any in iso22000 or fsssc22000 forums but possible.
There is of course a detailed ISO Standard for "air". Another popular safety-oriented CA standard is BCAS.
There is a summary of CA situation via Excel here -
(The whole thread is probably interesting, especially the input from Laura of Trace Analytics)
The BCAS Standard (1st Ed) is attached here -
Please have a look and revert if any queries.
PS - For food, there are recommended filter size ranges for Low > High Risk situations. (Also discussed elsewhere on this Forum)
PPS - you may also find the file cpc2 useful (Campden are a highly respected Organisation) which implies yr data might be not unrealistic for "air" in food factories -