The 3M™ Ethylene Oxide Monitor is a cost-effective and convenient way to perform personal air sampling for ethylene oxide. 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 Ethylene Oxide Monitor uses diffusion, rather than a pump, to collect an air sample with an accuracy of +/-25% at a 95% confidence level. It has a single treated charcoal sorbent wafer for easy collection of ethylene oxide and is typically used in pharmaceutical, health care, and chemical industries. After following all instructions, send the monitor to be analyzed in the lab of your choice. This monitor has a 1-year shelf life from it's production date.