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  • BSI
    PD CLC/TS 50677:2022 - TC Tracked Changes. Clothes washing machines and washer-dryers for household and similar use. Method for the determination of rinsing effectiveness by measurement of the surfactant content at textile materials
    Edition: 2022
    $617.54
    / user per year

Description of PD CLC/TS 50677:2022 - TC 2022

This document provides a method for the evaluation of the rinsing effectiveness of household clothes washing machines, washer dryers and commercial washing machines. The amount of residual linear alkylbenzene sulfonate surfactant (LAS) extracted from the unstained test swatches of the strips used in the washing performance test is determined. This is accomplished by measuring the ultraviolet (UV) light absorbance at the wavelength particular to LAS, a key ingredient of the detergent. Assuming a fixed linear relationship between LAS amount and quantity of detergent mixture and using a concentration versus absorbance curve developed as part of this procedure, the absorbance values are then converted into detergent concentrations, which together with the test solution mass data, yields detergent quantities. This assumption is done, because in the frame of this test it is not possible to determine the exact amount of LAS involved, even in the concentration curves, but only the amount of detergent used. On the textiles, this linear relationship is not given, but it is nevertheless used to express the amount of LAS as determined by UV light absorbance measurements in terms of a detergent amount.

Standard NumberPD CLC/TS 50677:2022 - TC
TitleTracked Changes. Clothes washing machines and washer-dryers for household and similar use. Method for the determination of rinsing effectiveness by measurement of the surfactant content at textile materials
StatusDefinitive
Publication Date2022-09-07
DescriptorsClothes, Washing machines, Measurement, Textiles, Testing methods
ICS97.060 Laundry appliances
CommitteeCPL/59
ISBN978 0 539 23437 4
PublisherBSI
Pages100

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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