◎ Cryotube with external screw cap is designed for freezing samples,The external screw cap design

can reduce the contamination probability during sample treatment.

◎ Cryotube with internal screw cap is for freezing samples in gas situation of liquid nitrogen. The

silicone gel o-ring can enhance the sealing performance of the tube.

◎ The caps and tubes are all made of PP material with same batch and mode. Thus same dilatation

coefficient can ensure the tube sealing performance under any temperature.

◎ Large white writing area allows easy marking.

◎ Transparent tube for easy observation.

◎ Round bottom design is good for pouring liquids out with little residual.

◎ Manufactured in cleaning workshop. Gamma radiation sterile available.