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在实验室气雾罐中进行了４０％乳酸溶液对空气中细菌杀灭效果的观察。当喷药４６０ｍｇ／ｍ３，于温度２０℃、相对湿度９０％下作用２６分钟，可杀灭金黄色葡萄球菌９９．９９％；作用８分钟可杀灭大肠杆菌达１００％。消毒时，最适相对湿度为６０％。
A 40% lactic acid solution was tested for bacterial killing in the air in a laboratory aerosol canister. When the spraying of 460mg / m3, at a temperature of 20 ℃, 90% relative humidity for 26 minutes to kill Staphylococcus aureus 99.99%; role of 8 minutes to kill E. coli up to 100%. When disinfecting, the optimum relative humidity is 60%.