CLC/TS 50677:2022
(Main)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
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
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.
Waschmaschinen und Waschtrockner für den Hausgebrauch und ähnliche Zwecke - Verfahren zur Bestimmung der Spülwirkung durch Messung des Tensidgehalts an Textilien
Machines à laver le linge et machines à laver et à sécher pour usages domestiques et analogues - Méthode pour la détermination de l'efficacité de rinçage par la mesure de la teneur en tensioactifs des matières textiles
Pralni in pralno-sušilni stroji za gospodinjsko in podobno uporabo - Metoda za ugotavljanje učinkovitosti izpiranja z merjenjem tenzidov na tekstilu
Prva izdaja te tehnične specifikacije ponuja metodo za vrednotenje učinkovitosti izpiranja gospodinjskih pralnih strojev, pralno-sušilnih strojev in komercialnih pralnih strojev. Določi se količina ostankov detergenta, izluščenega iz nepobarvanih vzorcev trakov, uporabljenih pri preskusu učinkovitosti pranja. To se doseže z merjenjem vpijanja ultravijolične svetlobe pri valovni dolžini, značilni za linearni alkilbenzen sulfonatni tenzid, ki je ključna sestavina detergenta z znano linearno odvisnostjo od količine mešanice detergenta.
Če uporabimo krivuljo koncentracije v primerjavi z vpojnostjo, ki je pripravljena kot del tega postopka, se vrednosti vpojnosti nato pretvorijo v koncentracije detergenta, kar skupaj s podatki o masi preskusne raztopine zagotavlja podatke o količinah detergenta.
Prva izdaja se zdaj pogosto uporablja v številnih različnih laboratorijih, tako pri proizvajalcih kot v neodvisnih preskuševalnih laboratorijih. Skupina SWG01-08 je prejela povratne informacije, da je preskusno breme zelo veliko, kar povečuje stroške in zmanjšuje možnost vzporednega preskušanja več strojev. V drugi izdaji je načrtovana poenostavitev postopka z namenom izboljšati rezultate te metode in znižati stroške preskušanja.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST-TS CLC/TS 50677:2019
Pralni in pralno-sušilni stroji za gospodinjsko in podobno uporabo - Metoda za
ugotavljanje učinkovitosti izpiranja z merjenjem tenzidov na tekstilu
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
Waschmaschinen und Waschtrockner für den Hausgebrauch und ähnliche Zwecke -
Verfahren zur Bestimmung der Spülwirkung durch Messung des Tensidgehalts an
Textilien
Machines à laver le linge et machines à laver et à sécher pour usages domestiques et
analogues - Méthode pour la détermination de l'efficacité de rinçage par la mesure de la
teneur en tensioactifs des matières textiles
Ta slovenski standard je istoveten z: CLC/TS 50677:2022
ICS:
97.060 Aparati za nego perila Laundry appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION CLC/TS 50677
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION June 2022
ICS 97.060 Supersedes CLC/TS 50677:2019
English Version
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
Machines à laver le linge et machines à laver et à sécher Waschmaschinen und Waschtrockner für den
pour usages domestiques et analogues - Méthode pour la Hausgebrauch und ähnliche Zwecke - Verfahren zur
détermination de l'efficacité de rinçage par la mesure de la Bestimmung der Spülwirkung durch Messung des
teneur en tensioactifs des matières textiles Tensidgehalts an Textilien
This Technical Specification was approved by CENELEC on 2022-04-18.
CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50677:2022 E
Contents Page
European foreword .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Symbols and abbreviated terms .6
4.1 The variables for rinsing effectiveness calculations are defined as: .6
4.2 Symbols relating to Annex A .7
5 Requirements .7
6 Test method .7
6.1 Equipment and materials .7
6.1.1 General .7
6.1.2 Climate chamber .8
6.1.3 Ultraviolet (UV) spectrophotometer .8
6.1.4 Quartz cuvette .8
6.1.5 Cuvette rack .8
6.1.6 Orbital shaker .8
6.1.7 Scale for weighing detergent and samples .8
6.1.8 Weigh bowl .8
6.1.9 Volumetric flask .9
6.1.10 Graduated cylinder, 500 ml .9
6.1.11 Magnetic stirrer .9
6.1.12 Magnetic stir bar .9
6.1.13 Pipette .9
6.1.14 Disposable glass pipettes (e.g. Pasteur pipettes) .9
6.1.15 Pipette bulbs, 2 ml or greater .9
6.1.16 Sample bottle with cap (for test swatch extraction) .9
6.1.17 Laboratory wipes .9
6.1.18 Distilled water .9
6.1.19 Squirt bottle .9
6.1.20 Funnel .9
6.1.21 Reference detergent A* base powder . 10
6.2 Preparation of equipment . 10
6.2.1 General . 10
6.2.2 UV spectrophotometer check . 10
6.2.3 Cleanliness . 10
6.2.4 Cuvette filling and cleaning . 10
6.2.5 Checking the quality of the distilled water . 10
6.2.6 Cuvette matching . 13
6.3 Procedure . 14
6.3.1 Detergent concentration curve . 14
6.3.2 Test run procedure . 14
6.3.3 Acquiring samples. 14
6.3.4 UV absorbance measurements . 15
6.4 Expression of results . 16
6.4.1 Rinsing effectiveness . 16
6.4.2 Rinsing effectiveness evenness . 19
7 Data to be reported . 19
Annex A (normative) Procedure for determining a detergent concentration curve . 20
A.1 General approach . 20
A.2 IEC-A* base detergent sampling . 20
A.3 Distilled water . 20
A.4 Preparation of Stock 1 solution (IEC-A* base powder detergent) . 20
A.4.1 Sample weighing . 20
A.4.2 Mix the sample . 20
A.4.3 Stock 1 calculation . 21
A.5 Preparation of Stock 2 . 21
A.5.1 Mix the sample . 21
A.5.2 Stock 2 calculation . 21
A.6 Preparation of working standards . 22
A.6.1 Mix the solutions . 22
A.6.2 Working standard calculations . 23
A.7 Measure the absorbance of the working standard solutions . 23
A.8 Calculations . 24
A.8.1 Initial treatment of the data . 24
A.8.2 Single sample data (per detergent sample) . 24
A.8.3 Combined sample data (all detergent samples) . 24
Annex B (normative) IEC-A* base powder detergent sampling . 26
B.1 Purpose . 26
B.2 Devices and materials . 26
B.3 Sampling procedure . 26
Annex C (informative) Acquiring samples using a dispenser . 30
C.1 General . 30
C.2 Calibration of the dispenser . 30
C.2.1 General . 30
C.2.2 Priming . 30
C.2.3 Setting the volume . 30
C.2.4 Calibration: . 30
C.2.5 Calculation: . 31
C.3 Acquiring samples (with dispenser) . 31
Annex D (informative) Quartz cuvette and glassware cleaning and handling . 32
D.1 Purpose . 32
D.2 Cuvettes . 32
D.3 General cleaning . 32
D.4 Periodic glass cleaning . 33
D.4.1 General .
...
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