Good Morning from Canada!
I work in a food manufacturing plant that used compressed air to operate, clean and dry machinery. The air used to clean and dry the machinery comes from a dedicated and specially fitered source (0.01 micron for particulate and .1 for oil and water) for use on direct food contact surfaces and it is tested for aerobic plate count on a monthly basis.
We have been getting results showing less than 10 colonies (each in 6 various "ports" tested). We have data over several months since and very occassionally the results are as high as 24 colonies. I can't find any literature to help me decipher the results. My questions are!
- should there be any colonies?
- should yeast and mold tests also be conducted?
- where is the literature on industry standard?