MetriCide 28 may be reused up to 28 days, assuming the minimum effective concentration of glutaraldehyde, as measured by a chemical indicator, remains within acceptable parameters and other conditions of use are met.

MetriTest 1.8% Test Strips are a glutaraldehyde concentration monitor for use in glutaraldehyde-containing germicide solutions with a minimum effective concentration (MEC) of 1.8% glutaraldehyde. It is recommended to test the glutaraldehyde solution prior to each use to help prevent healthcare-acquired infections (HAIs).