3M 3721甲醛采样仪
●浸渍亚硫酸氢盐的滤料将甲醛转化为低反应性产物
●适合PC-TWA采样
●不适合PC-STEL采样和MAC采样
包装:5个/箱
3M Formaldehyde Monitor 3721 5/Case
This monitor meets OSHA accuracy requirements of +/-25% for 8-hour TWA sampling of formaldehyde. Not for 15 minute STEL sampling. Analysis not included.
The 3M? Formaldehyde Monitor 3721 uses the proven scientific principle of diffusion, which is the gradual mixing of molecules of two or more substances. It monitors personnel or work areas in health care, laboratories and in the chemical, pulp/paper, foundry and textile industries. Analysis procedure is available upon request. The monitor uses a bisulfite-impregnated filter and is analyzed by colorimetry. The 3721 can be used for 8 hour TWA sampling to meet the OSHA requirement of +/-25% accuracy at 0.5-5.0ppm. However, this monitor does not have the sensitivity for short term exposure limit (STEL) monitoring. It has an 18-month shelf life.
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