STM PDF

Hard coal and coke - Mechanical sampling - Part 8- Methods of testing for bias. Original standard ISO 13909-8-2016 in PDF full version. Additional info + preview on request

Document status: Replaced by St ISO 13909-8-2025

Paraformaldehyde for industrial use - Methods of test - Part 1- General. Original standard ISO 1391-1-1976 (1977) in PDF full version. Additional info + preview on request

Document status: Active

Paraformaldehyde for industrial use - Methods of test - Part 2- Determination of ash. Original standard ISO 1391-2-1976 (1977) in PDF full version. Additional info + preview on request

Document status: Active

Paraformaldehyde for industrial use - Methods of test - Part 3- Determination of iron content - 2,2' - Bipyridyl photometric method. Original standard ISO 1391-3-1976 (1977) in PDF full version. Additional info + preview on request

Document status: Active

Paraformaldehyde for industrial use - Methods of test - Part 4- Determination of water - insoluble matter. Original standard ISO 1391-4-1976 (1977) in PDF full version. Additional info + preview on request

Document status: Active

Paraformaldehyde for industrial use - Methods of test - Determination of aldehyde content - Titrimetric method. Original standard ISO 1391-5-1981 in PDF full version. Additional info + preview on request

Document status: Withdrawn