Table:
text: Air filter
Filter classes
Filter classes
Usage_ Class_ Performance Performance_test Particulate_size_approaching_100_retention Test_Standard
Semi Hepa H12 99.5% Minimum value >0.5µm BS EN1822
Hepa H13 99.95% Minimum value >0.3µm BS EN1822
Hepa H14 99.995% Minimum value >0.3µm BS EN1822

text: Air filter
Filter classes
Filter classes
Usage_ Class_ Performance Performance_test Particulate_size_approaching_100_retention Test_Standard
Primary filters G1 65% Average value >5µm BS EN779
Primary filters G2 65–80% Average value >5µm BS EN779
Primary filters G3 80–90% Average value >5µm BS EN779
Primary filters G4 90%– Average value >5µm BS EN779
Secondary filters F5 40–60% Average value >5µm BS EN779
Secondary filters F6 60–80% Average value >2µm BS EN779
Secondary filters F7 80–90% Average value >2µm BS EN779
Secondary filters F8 90–95% Average value >1µm BS EN779
Secondary filters F9 95%– Average value >1µm BS EN779
Semi Hepa H10 85% Minimum value >1µm BS EN1822
Semi Hepa H11 95% Minimum value >0.5µm BS EN1822

Question: What particle size approaching 100% retention in the air filter has a use of semi-hepa and a class of h12?

Question: What class of air filters has a performance test of minimum and uses semi-hepa and has a performance of 99.5%?