GOST 23661-79

Interstate system for ensuring the uniformity of measurements. Weight amounts of the standard materials for preparation of the buffer solutions - operational pH standards of 2-nd and 3-rd classes. The technical and the metrological characteristics. Methods of them

Rubber compounding ingredients. Carbon black. Determination of sieve residue

Reagents. Method for the determination of specific surface of chromatographic materials by thermal desorption

Hard coal and coke. Mechanical sampling. Part 7. Methods for determining the precision of sampling, sample preparation and testing

State system for ensuring the uniformity of measurements. State verification schedule for provided with measuring functions technical systems and devices, accomplishing for measuring the volumes (amounts) of the digital information (data), transmitted over the Internet and telephony channels

Juice products. Determination of formol number by potentiometric method