Abstract: Based upon results of full-scale washing test method for detergency evaluation,differences of detergency performance on technical stain swatches obtained from front load washing machine and top load washing machine were compared.The test results indicated that the front load washing machine takes a longer operating time duration while consumes less water about 1/3 of that of the top load washing machine.Under same conditions such as detergent mass concentration and operating temperature,the detergency displayed by the front load washing machine is significantly higher than that by the top load washing machine.Longer main washing cycle of the front load washing machine is beneficial to bring action of ingredients of the detergent into full play.

Key words: detergent, front load washing machine, top load washing machine, detergency, performance evaluation