Plastics. Phenol-formaldehyde mouldings. Determination of free ammonia and ammonium compounds. Indophenol method Ingestion-build-103253 Contents of BS EN ISO

Contents of BS EN ISO 12956:

3 Determination of carbon dioxide

The relevant requirements of the EN ISO 9000 series of standards applying to the quality systems for inspection bodies are incorporated into this standard

The test procedures include test solution

Plastics. Phenol-formaldehyde mouldings. Determination of free ammonia and ammonium compounds. Indophenol method Ingestion-build-103253 Contents of BS EN ISO1 Scope This International Standard specifies a colorimetric comparison method for the determination of the amount of ammonia and ammonium compounds in phenol formaldehyde mouldings. NOTE This International Standard does not provide an absolute measure of the amount of ammonia present. The amount of ammonia in a moulded article is of importance when corrosion of metal inserts or contamination of foodstuffs in contact with the article has to be