McKesson Brand McKesson OPA Concentration Indicator (2/CS)

• 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, read at 90 seconds
• Large, easy-to-read indicator pad
• Definitive color identification comparison chart on each bottle
• 18-month shelf life (unopened bottle), 6-month shelf life from date of opening