Derm-Duet™ II is a 15 x 100mm biplate with one section for DTM (Dermatophyte Test Media) and the other section for RSM (Rapid Sporulation Media) for the culturing of hair, skin and nails for dermatophytic fungi. Each Derm-Duet™ is individually wrapped and can be stored at room temperature.

DTM II will turn red within a few days when a dermatophytic fungus is present. Dermatophytes include Trichophyton spp., Microsporum spp., and Epidermophyton spp. The RSM side will induce the organisms to produce spores (macroconidia) which can be viewed microscopically for identification. RSM media will also turn blue to blue-green in the presence of dermatophytes.