GOST 28663-90

Hard coals and coke. Methods for determination of phosphorus

Milk and milk products. The rules of test acceptance, methods of sampling and its preparation for the analysis. Part 2. Cow milk butter, spreads, cheese and cheese products, processed cheese and processed cheese products

Energy management system. Measurement and verification of energy performance of organizations. General principles and guidance

Fertilizers. Spectrophotometric determination of biuret in urea

Insulators. Classification and symbols

Hardware and software systems for the improvement upper limbs with feedback and a brain-computer interface. General requirements