Introduction and features 1.Material: PP 2.Brand: WHB 3.Sterilized by gamma irradiation 4.Available with 2 sizes of 15,50ml 5.Black or white silk screen scale, clear lines. Large white marking area. 6.Can be one-handed operation, easy-spin tube cover, good sealing. 7.The maximum can withstand 12000 xg centrifugal force 8.The temperature range is -80 ° C to 120 ° C 9.Products can be held for single or multi-tube packaging 10.Dnase/Rnase and pyrogen free