The SAAF Reactivity Monitoring Coupon measures an environment's corrosion potential as expressed by several factors: gaseous pollutants, humidity, temperature, gas flow conditions and general operating practices per the ISA (Instrument Society of America) Standard S71.04. The test coupon contains one silver and one copper metallic strip mounted on a clear plastic plate. The mounting plate is secured in place by two strips of velcro on the back.

Each coupon will be labeled with its own unique tracking number. When completed, the coupon is to be returned for analysis.