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A realistic soil cloth and test procedure for detergent evaluation
Author(s) -
Rutkowski B. J.
Publication year - 1967
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02558163
Subject(s) - triolein , adsorption , solvent , evaporation , suspension (topology) , chemistry , environmental science , chromatography , mathematics , organic chemistry , physics , lipase , thermodynamics , enzyme , homotopy , pure mathematics
The preparation of a uniformly soiled cloth for detergency studies is described. The soil, chosen for its realistic nature, consists of a colored clay as the particulate portion and triolein as the fatty or oily portion. The particulate portion of the soil is applied by tumbling the fabric in a horizontal axis washing machine containing a suspension of clay. The fatty portion is then applied by allowing the fabric to adsorb a known quantity of solvent‐dissolved triolein with subsequent evaporation of the solvent. An evaluation test procedure for measuring the relative efficiencies of proprietary detergents is also described. Using this procedure, soil removal, soil redeposition and optical brightener effectiveness of a detergent are determined simultaneously. Detergents can thus be given a numerical rating according to their over‐all performance. This rating is calculated from the equation: Overall Performance=Soil Removal‐Soil Redeposition + Optical Brightener. Typical detergent evaluation data obtained with this soil cloth and test procedure are given, along with a statistical treatment of the data.