What is ISO 21993 about?
ISO 21993 is an international standard on paper and pulp for deinking paper products. ISO 21993 specifies a basic laboratory test method for deinkability, applicable to any printed paper product, under alkaline conditions by means of single-stage flotation deinking and fatty acid-based collector chemistry.
The method defined in ISO 21993 is based on INGEDE Method 11. The method is not designed to model additional or alternative process steps, such as dispersing, post-flotation, washing and bleaching.
Who is ISO 21993 for?