Recommendations for the detection and estimation of nitrogenous treating agents in paper Ingestion-build-82061 4 Test and auxiliary instrumentation

4 Test and auxiliary instrumentation

Please note that compressed air for breathing apparatus is specified in the BS EN 12021

BS EN ISO 17510-1:2007 specifies requirements for equipment intended for sleep apnoea breathing therapy fordomiciliary use

This part of the standard covers the safety of lift components

Validation accuracies for wire feed equipment

Recommendations for the detection and estimation of nitrogenous treating agents in paper Ingestion-build-82061 4 Test and auxiliary instrumentationWhat is BS 4497 Detection of nitrogenous treating agents in paper about? The most useful sorting test for nitrogenous treating agents is the dye staining test, although it does not give specific identification of melamine formaldehyde resin. The dye staining method is based on the fact that, although acid dyestuffs will not dye cellulose unless mordanted, they combine readily with proteins, such as casein and gelatin. BS 4497 provides guidance on the