Filter technical demands and norms
Many filter units from Gram Clean Air A/S are delivered incl. filter cartridges that meet the demands for the separation degree for dust class M according to DIN EN 60335-2-69 Appendix A (separation degree > 99.9%).
Other filter types meet the demands according to DIN EN 1822 (e.g. absolute filters) and EN 779 (compact filters etc.). The demands and their filter description can be read in the table for the European filter norms.
See the brochure page below.