[ noun ] (work) the work of cleansing (usually with soap and water)
Used in print(Jay C. Harris and John R. Van Wazer, "Detergent...)
Exclusive of esthetic values , such_as high - or low foam level , perfume content , etc. , the requirements for the organic active used in washing textiles are high .
This is best demonstrated by practical washing tests in which cloth articles are repeatedly washed with the same detergent formulation .
A good formulation will keep the clothes clean and white after many washings ; whereas , with a poor formulation , the clothes exhibit a build-up of `` tattle-tale_grey '' and dirty spots - sometimes with bad results even after the first wash .
Since practical washing procedures are both lengthy and expensive , a number of laboratory tests have been developed for the numerical evaluation of detergents .
In this way , numerical values for the relative efficacy of various detergent formulations can be obtained by measuring the reflectance ( whiteness ) of the cloth swatches before and after washing .