Thermo Fisher Isotemp C90-10D34 Ultra Low Chest Freezer -70C 10 CF 208V 1Ph

Thermo Fisher Isotemp C90-10D34 Ultra Low Chest Freezer -70C 10 CF 208V 1Ph

The Thermo Fisher Scientific Isotemp Basic C90-10D34 is a two-stage cascade refrigeration chest freezer capable of reaching and maintaining temperatures down to -70°C. Designed for laboratories requiring reliable ultra-low temperature storage, this unit features the Isotemp "Voltage Boost" system, which allows operation across both 208V and 230V single-phase power without requiring a step-up transformer. The chest (horizontal lid) configuration provides efficient cold retention when accessing stored samples.

Specifications & What's Included

• Model: Thermo Fisher Scientific Isotemp Basic C90-10D34
• Item Number: 11990F3D1A00000A
• Temperature Range: Down to -70°C
• Internal Capacity: 10 Cubic Feet
• Internal Cavity Dimensions: 19" W × 35" D × 26" H
• Overall Dimensions: 33" W × 60.5" L × 41" H
• Voltage: 208/230 VAC (Voltage Boost)
• Current: 12 Amps
• Phase: Single Phase
• Frequency: 60 Hz
• Refrigeration: Two-stage cascade system
• Refrigerant — Stage 1: R-134A @ 5.75 oz; R-404A @ 13.75 oz
• Refrigerant — Stage 2: R-508B @ 7.8 oz (110 PSI); R-404A @ 1.2 oz (3 PSI)
• Oil Type: POE @ 24 oz (Stage 1); POE @ 39 oz (Stage 2)
• Test Pressure: High — 400 PSI; Low — 200 PSI
• Lid: Insulated locking lid with key-operated on/off switch
• Controls: Digital set point display; alarm indicator; Power On/Off key switch
• Certifications: UL Listed
• Includes: Power cord

Applications

Ultra low temperature (ULT) chest freezers in the -70°C to -80°C range are standard equipment in life science research, pharmaceutical, biobanking, and biotech laboratory environments. They are used to store biological samples including cell lines, tissue samples, nucleic acids (DNA/RNA), enzymes, vaccines, plasma, and other temperature-sensitive reagents that degrade at higher storage temperatures. The Isotemp series from Thermo Fisher Scientific has been widely deployed in academic research labs, hospital and clinical facilities, pharmaceutical manufacturing support, and contract research organizations. The cascade two-stage refrigeration design — common to all ULT freezers — uses a primary refrigeration loop to pre-cool the condenser of a secondary loop, enabling the extreme low temperatures that a single-stage system cannot achieve. The C90-10D34's 10 cubic foot chest format is suited to labs storing large volumes of boxed inventory or bulk frozen materials.