Occupational safety standards system. Respiratory protective devices. Methods of test and test equipment. Part 4. Determination of gas capacity, internal migration/desorption of gas and combined filters using constant air flow and breakthrough time of filters against carbon monoxide using sinusoidal air flow
Microbiology of food and animal feeding stuffs. Guidelines on preparation and production of culture media. Part 2. Practical guidelines on performance testing of culture media
Electrical steel. Methods of test for magnetic and electrical properties. Method for measurement of relative magnetic permeability and specific magnetic losses by a.c. bridge
