The Medium Efficiency Chip Semiconductor AMC CX Chemical Filter offers a 2-4 month lifespan for medium efficiency applications. In the air filtration industry, there are numerous standards for classifying, identifying, and evaluating the various performance characteristics of air filters.

In the United States, ASHRAE has released a series of test standards for air filters since 1968, which have been recognized by ANSI as the benchmark for filter performance classification.

In Europe, CEN formally released the European filter standard EN 779 in 2012, which was revised to define minimum filtration efficiency (ME) for F7-F9 efficiency filters, ensuring better air quality at the AHU outlet.

EUROVENT developed the "Eurovent 4/11" guidelines based on EN 779:2012 for energy consumption calculation and classification, enabling selection of high-efficiency filters with lower energy consumption.

The 2016 introduction of ISO 16890 standard provided global standardization in the air filtration industry, replacing regional standards ASHRAE 52.2 and EN779:2012.