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High efficiency air filters EPA, НЕРА and ULPA. Part 5. Determining the efficiency of filter elements

Document status: Replaced by GOST R ISO 29463-5-2024

Soils. Methods for determination of sulphate ion in water extract

Document status: Active

Non-electrical equipment for potentially explosive atmospheres. Part 2. Protection by flow restricting enclosure 'fr'

Document status: Active

Ocological management. Evaluation of past, accumulation in places of arrangement organizations, of ecological damage. General rules

Document status: Active

Occupational safety standards system. High-visibility warning clothing. Technical requirements

Document status: Replaced by GOST 12.4.281-2021

Dental materials. Testing methods of wear. Part 1. Wear by toothbrushing

Document status: Active