Point-of-use filtration is the best line of defense against microbial contamination of food in a compressed air system, as recommended in the 8th Edition of the SQF code, published November 2017 (SQF module 11.5.5.1):
“The recommended final stage of filtration in these food-contact areas should have a rating of 0.01 micron and an efficiency of 99.999% (or as determined by appropriate risk analysis).”
“It is generally advisable to locate the filtration as close as practically possible (near the “point of use” or the point where air contacts the food) so as not to have long lengths of piping/ tubing between the microbial removal filter and the air/food contact point.”
How to Pass a GFSI Certification Audit
A Parker Balston three-stage filtration system will significantly reduce the food's microbial contamination risk, offering a 6-log contamination reduction with 99.9999% efficiency at .01 micron.