PNST 259-2017

Quartz sand, ground sandstone, quartzite and veiny quartz for glass industry. Specifications

State system for ensuring the uniformity of measurements. Radiometers for measuring alpha-active substances contamination of surfaces. Calibration methods

Low power 30 TsK-6 coaxial circulator. Quality requirements for certified products

State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 1. Reference equivalent threshold sound pressure levels of pure tones for supra-aural earphones

Insulation coordination for equipment within low-voltage systems. Part 1. Principles, requirements and tests

Gas discharge devices. Methods of measurement of electrical parameters of operating and measuring conditions for glow-discharge