2 0ml true north polypropylene cryo vials with external threaded colored lids self standing sterile

Innovative design saves space in your freezer! Our externally-threaded vial with a cap design that is flush with the tube walls allows you to easily fill up all standard-sized cryogenic storage boxes including the 10 x 10 format. NOTE: Top of cap is hollow and not designed to be written on Using True North® Cryogenic Vials can increase your freezers holding capacity by up to 23% against other major brands. Superior puncture- and rupture-resistance polypropylene with silicon lid seal Patented lid with ergonomic 1.5 twist to open and close Printed writing area and graduations Inner resealable packs of 50 vials, complete with traceable sterility certificate Recommended for mechanical freezers and vapor phase LN2 (-196°) Sterile, non-pyrogenic and non-cytotoxic 2.0 mL vial measures 13 mm dia x 49 mm H, 4.0 mL 13 mm dia x 88 mm H