Capacity specifications: 0.5ml, 0.8ml, 1ml, 1.5ml and 2.0ml; subuliform bottom, transparent, vertical self-stand; Special amber storage tube, good light avoiding function; suitable for ultra-low temperature refrigerator (can’t be store in liquid nitrogen container); Uniform wall thickness, no-wash, conforming to drop test verification standards; DNase/RNase-free, non pyrogenic, non-cytotoxic, γ ray sterilization; Range of tolerable temperature: -86℃-121℃; red, orange, yellow, green, blue, purple, amber and transparent screw covers are provided for differential management; Provide specification of screwing off and screwing up torques to meet automation needs