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Effect of Relative Humidity on Formaldehyde Decontamination

机译：相对湿度对甲醛去污的影响

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Death rate studies were conducted to determine the effect of varying the concentration, humidity, and type of surface on the sporicidal activity of formaldehyde gas. Washed and unwashed spores were similarly exposed to detect the influence of residual nutrient growth medium upon the rate of kill. The results indicated that the sporicidal activity of formaldehyde gas varies directly with its concentration. Relative humidities (RH) over 50% proved essential for sterility. Spores on a porous surface (cotton cloth) were more readily killed at lower RH than those on a nonporous surface (glass). The reverse occurred at very high RH. At 75% RH, the unwashed spores on glass were killed faster than the washed spores.
机译：进行了死亡率研究，以确定改变浓度，湿度和表面类型对甲醛气体的杀孢子活性的影响。类似地暴露洗涤和未洗涤的孢子以检测残留营养生长培养基对杀灭率的影响。结果表明，甲醛气体的杀孢子活性随其浓度而直接变化。超过50％的相对湿度（RH）被证明对无菌至关重要。相对于无孔表面（玻璃），在较低的相对湿度下，多孔表面（棉布）上的孢子更容易被杀死。相反的情况发生在非常高的相对湿度下。在75％相对湿度下，玻璃上未洗涤的孢子的杀死速度要快于洗涤后的孢子。

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