FilTEq FEMA 1 fully meets the standard of VDI/DIN 3926, ASTM D6830-02, ISO 11057, GB12625. It can also compare with different filters with characteristics of cleaning, at the same time, the laboratory results to filter in practical application of performance. FEMA 1’s structure is standard reference model for many international standards since it is similar to the actual use of the environment approximation.