Detergency evaluation. III. Adjustment of Terg-O-Tometer and launderometer wash test methods to produce comparable soil removal data

Research paper by Jay C. Harris

Indexed on: 01 Mar '52Published on: 01 Mar '52Published in: Journal of the American Oil Chemists' Society


It was demonstrated that the average soil removal values for the four 10-minute wash Launderometer method could probably be essentially duplicated by a single 3-minute Terg-O-Tometer wash and one 2-minute rinse. The 3-minute Terg-O-Tometer method did not result in the same comparative rating of four detergents, but a series of tests with several other detergents using a 5-minute wash and a 5-minute rinse (using for comparison purposes a standard detergent) resulted in quite effective ratings. Of 13 detergents tested over a period of time, the two test methods provided soil removal values identical within a 95% confidence limit.These data indicate that a satisfactory technique can be developed using the Terg-O-Tometer, which would provide soil removal values and ratings of detergents closely paralleling the results obtained by the Launderometer multiple-wash method.