McKesson OPA Concentration Indicator OPA/28 Pad 50 Test Strips Bottle Single Use, Count of 1 (Pack of 1)

McKesson OPA/28 Test Strips. To verify the efficacy of McKesson OPA/28 Solution, user should test for the minimum effective concentration (MEC) prior to each use.. 3 second dip time. 90 seconds read time. Large, easy-to-read indicator pad.. Definitive color identification comparison chart on each bottle.. 18-month shelf life (unopened bottle), 6-month shelf li