Hi OrRedFood,
I don’t believe you can clean those filters and then guarantee they are still effective as designed.
There may be things that can be done to extend usage such as other filters at stages upstream if you don’t currently do that.
Also that specification of filter is for direct or indirect food contact, is that what you need?
Regarding the filter size, for food contact 0.01 microns is recommended by SQF. The SQF Air and Other Gases Guidance Document states:
Wherever the compressed air meets the food, either directly or indirectly, high-efficiency filters are to be in place at the point-of-use where the air enters the final section of tubing (not in the compressor room). This will significantly reduce the risk of microbial contamination of the food from the air. The recommended final stage of filtration in these food contact areas should have a rating of 0.01 microns with an efficiency of 99.999% (or as determined by appropriate risk analysis). Sufficient filtration is to be in place directly upstream of the final stage to protect the final stage from oil and water aerosols.
Kind regards,
Tony
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