The size of particulate generated by different processes and coolants may vary, but PM1 is by far the most common contaminant. CleanTec allows you and your staff minimize the risk of air-related discomfort and diseases. Our filter units guarantee a filtration efficiency of 99.95%. This means that you can always trust that the air coming out of the filter is clean and safe to breathe. CleanTec is the best-in-class for filtration performance.