Arctiko SF 500 Low Temperature Freezer -60cSF 500 freezer 60C has a high storage capacity of 13. 5 cu. FT and it will store your samples under optimal conditions even when opening it several times during the day. The single compressor technology ensure a high temperature uniformity. The cold air will stay inside the chamber and the hot air will raise and stay outside of the chamber. If you need a freezer you can open several times during a short time period, the LTF freezer is the best