The Deep Freezers from GFL are low temperature storage equipments, that have proven their efficiency and work interference-free on a long term basis. The long term storage of all kinds of organic materials is guaranteed and easy to use. GFL Deep Freezers are equipped with both microprocessor technique and an interface module for convenient remote control, monitoring and temperature recording via PC. Trouble-free data transfer is realized via the built-in serial RS 232 port. Also available are two further data transfer formats, RS 422 and RS 485, making all of the units compatible. There are 12 Chest Freezers with six different volumes, respectively, five Upright Freezers having three different storage volumes (from 30 to 500 L volume). The energy consumption is low. Both of these product groups are designed for temperatures of 0 °C to -40 °C, or -50 °C to -85 °C. The microprocessor-controlled temperature regulator, with digital display of actual and set temperature values and digital setting for specified values, operates maintenance-free and is shock resistant. The regulator is battery-buffered by a constantly charged NC battery that maintains the display of the actual temperature and the alarm functions for 60 hours in case of a power failure. An alternative solution is the sub-counter installation of the Deep Freezer 6481, the unit can easily be integrated into a laboratory bench, thus enabling the storage of frozen materials ready at hand at the work station. Deep Freezer 6481 offers a large storage volume while at the same time requiring little space (96 l cabinet volume / 3 drawers) and operates in a temperature range between -50 °C and -85 °C.