A Device to Aid in Determining the Effectiveness of Dairy Detergents

Open Access
Publisher Website
Google Scholar
Abstract
An exptl. project is being conducted to determine the effectiveness of various brands of dairy detergents in washing dairy equipment and utensils on dairy farms and in dairy manufacturing plants. Water composition varies greatly throughout the state and a large number of washing powders are being offered for sale to the dairymen. It is not the purpose of this paper to report the results of the expts. on washing powders but to give information about a machine, the Deterg-O-Meter, which was devised to aid in the washing trials. The machine consists of a 16-inch metal bicyle wheel mounted in a pivoted frame which permits vertical movement, powered by an electric motor and geared to turn 7 revolutions per minute. A baked-on milk film is prepd. on glass microscope slides under carefully controlled conditions. 18 of these slides with the milk film on them are then mounted on the rim of the wheel and held secure by metal clips. Water at a specified temp. containing the required amt. of washing powder is placed in a specially constructed pan. The wheel is lowered into the pan so that the slides dip into the water as the wheel turns and then are passed over a sponge rubber brush just as the slides emerge from the water. The slides are carefully observed and when clean they are removed from the wheel. The av. number of revolutions required to clean the slides is taken as an index of the effectiveness of the washing powder. Other factors also are to be considered in evaluating the detergents.

This publication has 0 references indexed in Scilit: