Brewing products. Methods for determining the volume fraction of ethyl alcohol, the mass fraction of the actual extract and calculation of the initial wort extract
System of national standards for quality of telecommunication services. Quality of services of local, long-distance and international telephone communication. Normative values for quality indices of telephone calls
Occupational safety standards system. Dermatological personal protective products. Directed efficiency test methods of dermatological personal protective products of protective type. Part 1. Products with hydrophilic and hydrophobic action
