Belarus standards PDF

Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2008) Analyse chimique des matières premières et des. Original standard UNE-EN ISO 21068-3-2008 in PDF full version. Additional info + preview on request

Document status: Replaced by STB UNE-EN ISO 21068-3-2024

Determination of boron (III) oxide in refractory products. Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes. Original standard UNE-EN ISO 21078-1-2008 in PDF full version. Additional info + preview on request

Document status: Active

Chemical analysis of refractories containing alumina, zirconia and silica. Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method). Apparatus, reagents and dissolution. Original standard UNE-EN ISO 21079-1-2008 in PDF full version. Additional info + preview on request

Document status: Active

Test method to measure the efficiency of air filtration media against spherical nanomaterials Part 1: Size range from 20 nm to 500 nm (ISO 21083-1:2018). Original standard UNE-EN ISO 21083-1-2020 in PDF full version. Additional info + preview on request

Document status: Active

Textiles Method for determination of alkylphenols (AP) (ISO 21084:2019). Original standard UNE-EN ISO 21084-2020 in PDF full version. Additional info + preview on request

Document status: Active

Health informatics. Directory services for healthcare providers, subjects of care and other entities. Original standard UNE-EN ISO 21091-2013 in PDF full version. Additional info + preview on request

Document status: Active