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Five different surfactants were used at 2.0% concentrations. The most and least effective were found to be Synthrapol N and Ahcowet RS respectively; based on their rating of whiteness index. Synthrapol N and Ahcowet RS were evaluated with the addition of sodium carbonate, sodium tripolyphosphate and a 1:1 combination of the two builders. In both cases the addition of a builder improved the cleaning efficiency of the surfactant. Although each builder alone improved the cleaning efficiency, the combination of sodium carbonate and sodium tripolyphosphate improved efficiency at a lower total concentration.

The effectiveness of 11 unbuilt liquid detergents and eight built liquid detergents, of varying formulations, in cleaning a standard soiled fabric in soft water (5 ppm) were evaluated. It was found that in soft water there were no significant differences between washing in warm or hot water with either type of detergent, except for a melaleuca oil based detergent which was significantly better in hot water. However, although not significant, in general, washing with unbuilt liquid detergents did give somewhat better results in both warm and hot water.