CAPS AND STOPPERS
Made of polyethylenePlug type push-in caps are made of polyethylene for test tubes with outside diameters from 12 to 17mm. Dual position caps offer two possibilities: the closed but unsealed position where samples are maintained aerobic for microbiological procedures; and the fully sealed position where the cap is pushed tight to seal the tube for anaerobic use or for storage, tansfer and centrifuge applications. 17mm caps (Series T401-10) are also to be used with the Simport 15ml Centrifuge Tube series T408.