另外，它每小时能把甲醛浓度降低大约9毫克。
In addition, it is about an hour can reduce the concentration of 9 mg of formaldehyde.
在甲醛浓度较低时，甲醇的存在能部分地提高放氢速率。
Containing methanol in formaldehyde solution with lower concentration, the rate of hydrogen evolution increased to some extent.
因此，基于直角棱镜的吸收池用于甲醛浓度测量中，可以提高测试速度和工作效率。
Thus, measuring efficiency is improved with the cell based on right-angle prism being used in the measurement of formaldehyde concentration.
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