Rapicide™ OPA/28 Test Strips Rapicide™ OPA/28 Test Strips ML02-0137 Test strips are designed specifically for use with Rapicide OPA/28 High-Level Disinfectant and provide MRC (minimum recommended concentration) verification. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.