GOST 21507-81

Copper-zinc alloys. Methods for the determination of iron

Safety requirements for electrical equipment for measurement, control and laboratory use. Part 2-020. Particular requirements for laboratory centrifuges

Ophthalmic implants. Ophthalmic viscosurgical devices. General safety requirements

Mine installation earthing. Technical requirements and test methods

Residual current operated circuit-breakers without integral overcurrent protection for house and similar uses (RCCB`s). Part 2-1. Applicability of the general rules to RCCB`s functionally independent of line voltage

Child-resistant packaging. Requirements and testing procedures for reclosable packages