Fisher Scientific Laboratory Freezer Under Counter -20C

Fisher Scientific Isotemp Undercounter Laboratory Freezer – 5.0 to 5.6 Cu. Ft. Capacity, Adjustable -15 C to -20 C Range, Manual Defrost, Solid Door, 120V (MPN: 97-926-1)

Used; excellent condition.

The Fisher Scientific Isotemp 97-926-1 is a heavy-duty, clinical-grade undercounter general-purpose laboratory freezer engineered to deliver a stable, uniform cold-storage environment for temperature-sensitive biological specimens, enzymes, reagents, and clinical samples. Designed with a space-saving compact footprint that slides effortlessly under standard lab bench spaces, this 120V freestanding unit features an internal capacity of 5.0 to 5.6 cubic feet (142 to 159 liters). Powered by a highly efficient, base-mounted 360W compressor utilizing eco-friendly, CFC-free R-134a refrigerant, the freezer maintains an adjustable operational thermal horizon from -15 C down to -20 C (adjustable down to -24 C via an internal hydraulic thermostat dial). Equipped with thick, foamed-in-place polyurethane insulation, a solid left-hinged door with magnetic gasketing, three fixed wire interior shelves, and three convenient built-in door shelves, this manual-defrost unit prevents sample dehydration or erratic temperature spikes caused by auto-defrost heat cycles.

Technical Performance and Enclosure Design

• Stable Manual Defrost Architecture: Engineered strictly with a manual defrost system that eliminates periodic, automated heating cycles common to residential units. This ensures a static, pulse-free internal microclimate, preventing fragile proteins and nucleic acids from experiencing damaging freeze-thaw degradation cycles.

• Reliable Hydraulic Thermostat Loop: Outfitted with an easy-to-reach internal manual analog mechanical dial linked to a high-accuracy hydraulic thermostat. Technicians can dial in baseline parameters from -12 C down to -24 C to lock down customized temperature boundaries.

• Robust Industrial Outer Shielding: The main outer frame is constructed from high-gauge sheet steel coated in a baked-on, corrosion-resistant white acrylic enamel finish. The interior features a seamless, impact-resistant molded ABS liner designed with smooth, radiused corners for effortless chemical wipe-downs and spill containment.

• High-Density Polyurethane Matrix: The cabinet walls and solid swing door are insulated with thick, foamed-in-place polyurethane insulation. This thermal barrier maximizes temperature retention, reduces compressor runtime wear, and maintains internal cold parameters during unexpected power grid outages.

Product Specifications

• Model Number / MPN: 97-926-1 (Model 979261)

• Manufacturer / Brand: Fisher Scientific / Thermo Fisher Scientific (Isotemp Series)

• Freezer Configuration Footprint: Compact Undercounter / Freestanding Single Solid Door Unit

• Volumetric Storage Capacity: 5.0 to 5.6 Cubic Feet (141.6 to 159 Liters nominal capacity)

• Operational Temperature Span: Adjustable from -12 C to -24 C (Optimized for standard -20 C laboratory storage targets)

• Electrical Configuration Matrix: 115-120 Volts AC, 60 Hz, 1.1 Amps operating current draw / 360W compressor load

• Refrigerant Media Chemistry: Non-ozone-depleting, CFC-Free R-134a compound

• Internal Storage Layout: 3 fixed open-wire horizontal shelves paired with 3 built-in segmented door organizational storage shelves

• Physical Exterior Footprint: 33.5 inches height x 21.5 inches width x 26.5 inches depth (Weight: Approx. 100 lbs / 45.3 kg)

Key Benefits and Applications

• Enzyme and Co-Factor Archiving: The go-to underbench baseline choice for storing restricted molecular enzymes, active antibodies, standard buffers, and genetic primer library blocks that require tight temperature lines.

• Space-Optimized Working Footprint: The compact underbench silhouette slips neatly beneath standard lab cabinetry or operates cleanly in narrow hallway alcoves, allowing core facilities to add decentralized cold storage right at the workstation.

• Excellent Magnetic Door Sealing: The solid right-hand opening door (hinged to pull open from the left) features a commercial-grade, multi-point magnetic vinyl gasket that pulls tight against the cabinet frame to block ambient moisture and eliminate frost accumulation.

• Zero Cross-Contamination Risk: Built completely without active forced-air internal fans, minimizing internal cross-well dust tracking or container label desiccation across stored microplates and cryo racks.

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