Ambient air. Standard gravimetric measurement method for the determination of the PM$d1$d0 or PM$d2$d,$d5 mass concentration of suspended particulate matter— 58 стр.
Respiratory protective devices. Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only. Requirements, testing, marking— 48 стр.
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Ambient air. Standard method for measurement of NO$d3$u-, SO$d4$u2$u-, Cl$u-, NH$d4$u+, Na$u+, K$u+, Mg$u2$u+, Ca$u2$u+ in PM2,5 as deposited on filters— 48 стр.
