State system for ensuring the uniformity of measurements. State special standard and state verification schedule for instruments measuring surface roughness parameters Rmax, Rz in range from 0,001 to 3000 µm and Ra in range from 0,001 to 750 µm
Occupational safety standards system. Additional protective footwear for works with radioactive and chemically toxic substances. General technical requirements and test methods
Electrical apparatus for use in the presence of combustible dust. Part 2. Test methods. Section 2. Method for determining the electrical resistivity of dust in layers
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