（1）50 ml polypropylene centrifuge tube with explicit reading strengths , printing accurate graduations.
（2）Semi-transparent Polypropylene have excellent chemical resistance.
(3) Tubes are non-sterile. Seal-ring molding ensures a leak proof seal without the contamination problems caused by cap liners.
(4)Large writing area on tubes makes identification simple.
(6)Size: 117mm x 34mm dia.