Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method Ingestion-build-98192 which is very useful for

which is very useful for the users in order to produce and maintain high-quality textile fabrics

While aluminium ingots are widely used across different sectors and products

It supersedes BS EN 60695-8-1:2008 which is withdrawn

BS EN 50443 discusses effects of electromagnetic interference on pipelines caused by high voltage a

in order to instruct the persons handling the equipment as to its use and operation

Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method Ingestion-build-98192 which is very useful for1 Scope This International Standard specifies three methods for the determination of the hexamethylenetetramine (hexa) content of phenolic resins. The three methods are equivalent. The Kjeldahl method described in Clause 3 is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method and the hydrochloric acid method described in Clause 4 and Clause 5, respectively, are only applicable if there