Freezing tubes with silicone sealed cap, self-standing, PP 5ml, 1.8ml, 1.5ml Freezing TubeFreezing tubes with silicone sealed cap, self-standing, PP5ml, graduated, 3200pcs/CTN, 56*42*42cm1.8ml, graduated, 10000pcs/CTN, 56*42*42cm 1.5ml, ungraduated, 10000pcs/CTN, 56*42*42cm