CLC/TS 50677:2019
(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 Technical Specification 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. Using a concentration versus absorbance curve developed as part of this procedure, the absorbance values can then be converted into detergent concentrations, which together with the test solution mass data, yields detergent quantities.
Waschmaschinen und Waschtrockner für den Hausgebrauch und ähnliche Zwecke - Verfahren zur Bestimmung der Spülwirkung durch Messung des Tensidgehalts an Textilien
This Technical Specification provides a method for the evaluation of the rinsing effectiveness of household clothes washing machines, washer dryers and commercial washing machine. The amount of residual detergent extracted from the unstained swatches of the strips used in the washing performance test is determined. This is accomplished by measuring the ultraviolet light absorbance at the wavelength particular to linear alkylbenzene sulfonate surfactant, a key ingredient of the detergent with a known linear relationship to the quantity of detergent mixture. Using a concentration versus absorbance curve developed as part of this procedure, the absorbance values can then be converted into detergent concentrations, which together with the test solution mass data, yields detergent quantities. NOTE: The precision and bias of this measurement is under investigation.
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
La présente Spécification Technique fournit une méthode pour l'évaluation de l'efficacité de rinçage des machines à laver le linge à usage domestique, des machines lavantes-séchantes et des machines à laver à usage commercial. La quantité d'alkylbenzènesulfonate linéaire tensioactif (LAS) résiduel extraite à partir des pièces d'essai non salies des bandes utilisées pour l'essai d'aptitude à la fonction de lavage est déterminée, en mesurant l'absorbance de la lumière ultraviolette (UV) à la longueur d'onde spécifique du LAS, un ingrédient essentiel du détergent. En prenant pour hypothèse une relation linéaire fixe entre la quantité de LAS et la quantité de mélange détergent et en utilisant une concentration en fonction de la courbe d'absorbance déterminée dans le cadre de cette procédure, les valeurs d'absorbance sont ensuite converties en concentrations de détergent qui, combinées aux données relatives à la masse de la solution d'essai, indiquent les quantités de détergent. Cette hypothèse est admise, car il n'est pas possible dans le cadre de cet essai de déterminer la quantité exacte de LAS employée, même avec les courbes de concentration, mais uniquement la quantité de détergent utilisée. Sur les textiles, cette relation linéaire n'est pas indiquée, mais elle est néanmoins utilisée pour exprimer la quantité de LAS déterminée par les mesures d'absorbance de la lumière UV pour une quantité de détergent. En utilisant une concentration en fonction de la courbe d'absorbance déterminée dans le cadre de cette procédure, les valeurs d'absorbance peuvent ensuite être converties en concentrations de détergent qui, combinées aux données relatives à la masse de la solution d'essai, indiquent les quantités de détergent.
Pralni in pralno-sušilni stroji za gospodinjsko in podobno uporabo - Metoda za ugotavljanje učinkovitosti izpiranja z merjenjem tenzidov na tekstilu
Ta tehnična specifikacija ponuja metodo za vrednotenje učinkovitosti izpiranja gospodinjskih pralnih strojev, pralno-sušilnih strojev in komercialnih pralnih strojev. Določi se količina ostankov linearnega alkilbenzensulfonatnega tenzida (LAS), izluščenega iz nepobarvanih preskusnih vzorcev trakov, uporabljenih pri preskusu učinkovitosti pranja. To se doseže z merjenjem vpijanja ultravijolične (UV) svetlobe pri valovni dolžini, značilni za linearni alkilbenzensulfonatni tenzid, ki je ključna sestavina detergenta.
Če predpostavimo, da je med količino linearnega alkilbenzensulfonatnega tenzida in količino mešanice detergenta fiksno linearno razmerje ter če uporabimo krivuljo koncentracije v primerjavi z vpojnostjo, ki je pripravljena kot del tega postopka, se vrednosti vpojnosti nato pretvorijo v koncentracije detergenta, ki skupaj s podatki o masi preskusne raztopine zagotavlja podatke o količinah detergenta. Ta predpostavka se uporabi, ker v okviru preskusa ni mogoče določiti natančne količine vpletenega linearnega alkilbenzensulfonatnega tenzida, niti na koncentracijskih krivuljah, ampak zgolj količino uporabljenega detergenta.
Na tkaninah to linearno razmerje ni podano, vendar se kljub temu uporablja za izražanje količine linearnega alkilbenzensulfonatnega tenzida, ugotovljene z meritvami vpijanja UV-svetlobe, na podlagi količine detergenta.
Če uporabimo krivuljo koncentracije v primerjavi z vpojnostjo, ki je pripravljena kot del tega postopka, se vrednosti vpojnosti nato pretvorijo v koncentracije detergenta, ki skupaj s podatki o masi preskusne raztopine zagotavlja podatke o količinah detergenta.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-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 ähnlichen Gebrauch -
Methode 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 50677:2019
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
March 2019
ICS 97.060
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 2018-12-31.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50677:2019 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 Rinse Effectiveness calculations are defined as: .6
4.2 Symbols relating to Annex A .7
5 Requirements .7
6 Test method .8
6.1 Equipment and materials .8
6.1.1 Climate chamber .8
6.1.2 Ultraviolet (UV) spectrophotometer .8
6.1.3 Quartz cuvette .8
6.1.4 Cuvette rack .8
6.1.5 Orbital shaker .8
6.1.6 Scale for weighing detergent and samples .8
6.1.7 Weigh bowl .9
6.1.8 Volumetric flask .9
6.1.9 Graduated cylinder, 100 ml .9
6.1.10 Magnetic stirrer .9
6.1.11 Magnetic stir bar .9
6.1.12 Pipette .9
6.1.13 Disposable glass pipettes (e.g. Pasteur pipettes) .9
6.1.14 Pipette bulbs, 2 ml or greater .9
6.1.15 Sample bottle with cap (for test swatch extraction) .9
6.1.16 Laboratory wipes .9
6.1.17 Distilled water .9
6.1.18 Squirt bottle . 10
6.1.19 Funnel . 10
6.1.20 Reference detergent A* base powder . 10
6.2 Preparation of equipment . 10
6.2.1 UV spectrophotometer check . 10
6.2.2 Cleanliness . 10
6.2.3 Cuvette filling and cleaning . 10
6.2.4 Checking the quality of the distilled water . 10
6.2.5 Cuvette matching . 13
6.3 Procedure . 13
6.3.1 Detergent concentration curve . 13
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 Rinse Evenness . 18
7 Data to be reported . 18
Annex A (normative) Procedure for Determining Detergent Concentration Curve . 19
General approach . 19
A.1
A.2 IEC-A* base detergent sampling . 19
A.3 Distilled Water . 19
A.4 Preparation of Stock 1 solution (IEC-A* base powder detergent) . 19
A.4.1 Sample Weighing . 19
A.4.2 Mix the Sample . 19
A.4.3 Stock 1 Calculation . 20
A.5 Preparation of Stock 2 . 20
A.5.1 Mix the Sample . 20
A.5.2 Stock 2 Calculation . 20
A.6 Preparation of Working Standards . 21
A.6.1 Mix the Solutions . 21
A.6.2 Working Standard Calculations . 21
A.7 Measure the Absorbance of the Working Standard Solutions . 22
A.8 Calculations . 23
A.8.1 Initial Treatment of the Data . 23
A.8.2 Single sample data (per detergent sample) . 23
A.8.3 Combined sample data (all detergent samples) . 23
Annex B (normative) IEC-A* base powder detergent sampling . 24
B.1 Purpose . 24
B.2 Devices and Materials . 24
B.3 Sampling procedure . 24
Annex C (informative) Acquiring samples using a dispenser . 28
C.1 General . 28
C.2 Calibration of the dispenser . 28
C.2.1 General . 28
C.2.2 Priming . 28
C.2.3 Setting the volume . 28
C.2.4 Calibration: . 28
C.2.5 Calculation: . 29
C.3 Acquiring samples (with dispenser) . 29
Annex D (informative) Quartz cuvette and glassware cleani
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