GOST 5470-75

State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring volume densities of ionized air electric charge and air ion number concentration

Sand for cement testing. Specifications

Assistive products for persons with excretory dysfunction. Terms and definitions. Classification

Ophthalmic optics. Spectacle lenses. Terms and definitions

Ionizing radiation scintillation detectors. Common rules for methods of scintillation parameters measurements

State system for ensuring the uniformity of measurements. Reference materials of composition and properties of substances and materials. Basic principles