Reference impact safe levels (RISL) of pollutants in air of working zone. Amendment No. 1 to hygienic normatives "Reference impact safe levels (RISL) of harmful substances in occupational air: GN 2.2.5.687-98" dated 04.02.98
Emergency exposure limits (EEL) of 2-chlorovinyldichloroarsine (lewisite) in the air of working area of facilities for storage and disposal of chemical weapons
Maximum permissible level (MPL) of process equipment surface pollution by O-isobutyl-beta-n-diethylaminoethylthiol ester of methyl-phosphonic acid (substances type Vx)