SeptaSecure caps for 15 and 50 mL centrifuge tubes. These non sterile caps are available as either crosscut or uncut septum. The cross cut septum will work with most autosampler probes and/or pipette tips. The caps and tubes can be sterilized by gamma irradiation or with an autoclave. Caps work with many different tube varieties, ask us about samples for testing. For more information contact a representative.