About

Acleaning validation coupon is used in the laboratory to validate aproposed swabbing method

Example:  if your proposed method forswabbing involves a solvent, say methanol, how do you know if that solvent andthe swabbing technique you are going to use will actually recover the residuefrom the surface? In order to determine the efficiency of your swabbing methodin recovering the residue, a cleaning validation coupon, matching the materialof construction and the finish of the subject surface, is spiked with knownamount of a solution of the residue of known concentration, dried, and swabbedwith your proposed swabbing method and the swab analyzed for the residue. Ifthe recovery of the residue is within acceptable limits, then you can proceedto do the swabbing on the subject surface.

COUPONTYPES

@GlobeIndustries offers coupons made of several different materials with differentfinishes, such as 316 stainless steel, 304 stainless steel, aluminum, brass,bronze, a variety of plastics and rubbers, etc.

Standarddimensions of the coupons are 1/8 x 2 x 2 and 1/8 x 4 x 4. However,custom-made cleaning validation coupon sizes are available.