CBS High Security straws use a double-barrier closed system: a sealed inner column sits within an outer straw, which is in turn sealed at both ends. This design prevents direct contact between the sample inside the straw and the liquid nitrogen in the storage vessel. Standard straws are open-ended and submerge the sample content directly in the shared liquid nitrogen bath, which creates cross-contamination risk in multi-patient storage vessels.
The significance of this distinction has been established by published clinical case reports documenting viral transmission between samples stored in shared liquid nitrogen. The CBS High Security system — straws, visotubes, goblets, and canisters — was developed to address exactly this risk by creating physical separation between the sample and the storage medium at every level of the storage hierarchy.
In regulated IVF settings, CBS High Security straws are the appropriate choice for embryo and oocyte cryopreservation. They are compatible with the full CBS storage accessory range — cryocanes, cryosleeves, goblets, and visotubes — and with CBS High Security vitrification kits. Cryolab supplies the full CBS straw range. Contact Cryolab to discuss straw specification for your laboratory.
