The Cryosafe CryoGuard autofill Ln2 series freezers provide the safest longterm storage of critical samples. CryoGuard's™ restricted-opening neck design brings LN₂ consumption to one of the lowest rates in the industry. In vapor phase operation, LN₂ is stored out of the inventory storage area helping eliminate cross contamination issues. Every CryoGuard™ comes standard with: 6ft. stainless steel armor-plated transfer hose, 3/5 warranty, folding step, inventory carousel, keyed lid lock, LN₂ measuring rod, flat stainless-steel work surface and the iSentry Plus controller.