Ensure high performance products and reproducible clinical test results and consistent microbiological evaluation of drugs and foods with Thermo Scientific™ Culti-Loops™ quality control organisms. The Thermo Scientific™ Oxidase QK Set includes a ready-to-use set of QK organisms in Culti-Loops format: these are ready-to-use, single-use bacteriological inoculation loops containing stabilized, viable microorganisms in a unique gel matrix.