BS ISO 21993:2020 pdf free.Paper and pulp — Deinkability testfor printed paper products.
This document specifies a basic laboratory test method for deinkability, applicable to any kind ofprinted paper product, under alkaline conditions by means of single stage flotation deinking and fattyacid-based collector chemistry.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references,only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure formonitoring the atmosphere and conditioning of samples
ISO 638,Paper, board and pulps —Determination of dry matter content —Oven-drying method
ISO 1762,Paper, board, pulps and cellulose nanomaterials — Determination of residue (ash content) onignition at 525 Cc
ISO 2469:2014,Paper, board and pulps —Measurement of diffuse radiance factor (diffuse reflectance factor)ISO 2470-1,Paper, board and pulps — Measurement of diffuse blue reflectance factor —Part 1: lndoordaylight conditions (1so brightness).
IS0 3689,Paper and board — Determination of bursting strength after immersion in waterISO 4119:1995, Pulps —Determination of stock concentration.
ISO 5269-1,Pulps – Preparation of laboratory sheets for physical testing — Part 1: Conventional sheet-former method.
ISO 5269-2,Pulps — Preparation of laboratory sheets for physical testing — Part 2:Rapid-Kothen methodISO 5631-1, Paper and board – Determination of colour by diffuse reflectance — Part 1: Indoor daylightconditions (c/2 degrees).
un-deinked pulp:pulp obtained from printed paper products, pulped with added deinking chemicals according to thisdocument, prior to flotation.
stock concentration:ratio of the oven-dry organic and inorganic mass of material that can be filtered from a stock sample, tothe mass of the unfiltered sample[SOURCE: ISO 4119:1995,modified — Part of the sentence “when determined as specified in thisInternational Standard” and Note 1 were removed.] fibre concentration:ratio of the oven-dry mass of organic material, that can be filtered from a stock sample, to the mass ofthe unfiltered sample
Note 1 to entry: Organic material is the total material, less its ash.
Note 2 to entry: The organic material mainly consists of cellulosic fibres and fines.
fibre yield:ratio of the oven-dry mass of organic material after flotation to the oven-dry mass of organic materialbefore flotation
Note 1 to entry: Organic material is the total material, reduced by the oven-dry mass of its ash.Note 2 to entry: The organic material mainly consists of cellulosic fibres and fines.rate of filtration:time taken for a defined volume of a test fluid to pass a filter.BS ISO 21993 pdf download.