SnapTwist(TM)-reaction vials made of PP 1.5 ml, free-standing Made of PP. RNase, DNase, DNA and pyrogen free. Autoclavable. Timesaving closure: just press to safely seal vial, twist just a ¼ turn to open. With clear polished surface Leak-proof lip seal on closure Conical reaction vials are centrifugable up to 20 000 x g Temperature resistant in the range -90 to +100 °C Delivery without lid, please order separately.