ISO 11402:1993

Specifies test methods (hydroxylammonium chloride, sulfite or KCN procedure) for condensation resins, including urea, furan, melamine and phenolic resins, as well as combinations and modifications of these resins. The free formaldehyde determined according to this standard establishes the actual condition at the time of test, the value has no quantitative relationship to free formaldehyde that may arise during or after processing. The purpose is to establish recognized determination procedures (e.g. in order to check whether official regulations on the handling of hazardous workplace materials are observed).