Plastics. Polymer dispersions. Determination of free formaldehyde Ingestion-build-67170 BS 5421-2 describes eight methods

BS 5421-2 describes eight methods of test for polyurethane thread (elastane yarn):

S3XXXX and S4XXXX series

Metal and iron ore industry

ISO 719 describes the classification method of glass according to the consumption of acid and its equivalent of alkali [sodium oxide (Na2O)]

Plastics. Polymer dispersions. Determination of free formaldehyde Ingestion-build-67170 BS 5421-2 describes eight methods1 Scope This International Standard describes two methods for the determination of free formaldehyde (HCHO) in polymer dispersions. The procedure has been evaluated using acrylic, acrylonitrile butadiene, carboxylated styrenebutadiene and vinyl acetate polymer dispersions. Both test methods may also be applicable to polymer dispersions of other compositions. Method A is the preferred method for polymer dispersions with a free formaldehyde content