Commercial sets contain the manufacturer recommended quality control strains for bacterial identification systems Ordering microorganisms in sets simplifies the ordering process One convenient packaging option Four KWIK-STIK™ units; each KWIK-STIK device features a single microorganism strain in a lyophilized pellet, a reservoir of hydrating fluid and inoculating swab Each set contains a low, medium and high level of the same microorganism and one negative control For the use with Cepheid™ systems only