50%5、可分析化学物，请与销售员联系6、送往国内3M 授权实验室或自行分析（费用客户承担）3M? Organic Vapor Monitor 3520, with Backup Section 5/CaseThis monitor is suited for compounds for which activated carbon shows limited capacity. Accuracy of /-25% at a 95% confidence level for many workplace contaminants. Analysis not includedThe 3M? Organic Vapor Monitor 3520, with Backup Section uses the proven scientific principle of diffusion, which is the gradual mixing of molecules of two or more substances. Primary and back-up sorbent pads are included for sampling demanding environments. Especially suited for monitoring compounds like acrylonitrile, butadiene and methylene chloride for which activated carbon shows limited capacity. It has two stages for increased sampling capacity. Increased sampling may be necessary when sampling volatile compounds (compounds with low boiling points), high or unknown concentrations, complex mixtures, or when sampling in high humidity conditions. It has an 18-month shelf life.
