The 3M™ Organic Vapour Monitor is a cost-effective and convenient way to perform personal air sampling for many organic vapours. It is easy to use, simply clip it to your shirt lapel, collar, or pocket without interfering with your work activities. No batteries, hoses, or pumps are needed to use the monitor to sample your air.The 3M Organic Vapour Monitor uses diffusion, rather than a pump, to collect an air sample with an accuracy of +/-25%, at a 95% confidence level for many workplace organic vapours, for both personal or area sampling. It contains a single charcoal sorbent wafer for easy collection of organic vapours and can be used for most applications. After following all instructions, send the monitor to be analyzed in the lab of your choice. This monitor has a 2-year shelf life from it's production date.