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Computerization in fabric detergency testing
Author(s) -
Illman J. C.,
Hartwig G. M.,
Roddewig J. W.
Publication year - 1969
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/bf02541211
Subject(s) - reflectivity , computer science , scale (ratio) , process engineering , environmental science , remote sensing , materials science , optics , engineering , geology , physics , quantum mechanics
Abstract An automated method is described which greatly speeds the calculation of fabric detergency test results. Laboratory determination of fabric detergency commonly involves replicated, bench scale washing of small pieces of cotton artificially soiled with various oil‐carbon black mixtures. Reflectance measurements before and after washing give a measure of the amount of soil removed. Often, in a program involving several variables, thousands of reflectance measurements may be involved. By converting the electrical signal from the reflectometer to digital form, and feeding this value to a card punch, the reflectance values are systematically recorded on punched cards. Using an appropriate computer program, the reflectance changes for each test are calculated and tabulated, the saving in operator time is large and statistical examination of the data can be incorporated with the program. An example of the type of data output is given.