Air filters for general ventilation -- Part 1: Technical specifications, requirements and classification system based upon particulate matter efficiency (ePM)— 34 стр.
Air filters for general ventilation -- Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured— 28 стр.
Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full -- Part 1: General principles and requirements— 40 стр.
Determination of particle size distribution -- Single particle light interaction methods -- Part 4: Light scattering airborne particle counter for clean spaces— 32 стр.
