Product Description
Neslab Coolflow CFT-33 Refrigerated Recirculator – Laboratory-Grade Liquid Cooling System
This used Neslab CFT-33 is a compact, air-cooled recirculating chiller designed to provide a continuous supply of cooling fluid at a constant temperature and volume for laboratory and industrial applications . The unit consists of an air-cooled refrigeration system, a sealable reservoir, a recirculating pump, and a temperature controller . It delivers stable, repeatable cooling for analytical instruments, lasers, process cooling, and component testing .
The CFT-33 offers 1000 watts of cooling capacity at 20°C and operates within a temperature range of +5°C to +35°C . The temperature stability is ±1.0°C . The reservoir volume is 1.1 gallons (4.1 liters) and the unit commonly uses a PD-2 positive displacement pump . The unit operates on standard 115V/60Hz single-phase power at 12.0 amps .
Condition Note: This unit is untested.
Key Specifications
| Specification | Details |
|---|---|
| Manufacturer | Neslab Instruments (Thermo Fisher Scientific) |
| Model | CFT-33 |
| Type | Air-cooled refrigerated recirculator |
| Cooling Capacity | 1000 Watts (at 20°C) |
| Temperature Range | +5°C to +35°C |
| Temperature Stability | ±1.0°C |
| Reservoir Volume | 1.1 gallons (4.1 liters) |
| Pump Type | PD-2 (typical) or PD-1 |
| Voltage | 115 VAC |
| Frequency | 60 Hz |
| Phase | Single |
| Current | 12.0 Amps |
| Refrigerant | R134A (7 oz) |
| Dimensions (W x D x H) | 14.75″ x 22″ x 24.5″ (approx.) |
| Plumbing Connections | ½ inch FPT (supply and return) |
| Condition | Used – Untested |
Key Features & Benefits
| Feature | Benefit |
|---|---|
| 1000W Cooling Capacity | Sufficient for most analytical instruments, lasers, and small-scale process cooling |
| Air-Cooled Refrigeration | No external water supply required; simple installation |
| Analog or Digital Controller | Provides easy temperature adjustment and monitoring (depending on variant) |
| Positive Displacement Pump | Delivers consistent flow and pressure for reliable cooling |
| Sealable Reservoir | Minimizes fluid evaporation and contamination |
| Compact Footprint | Fits easily on lab benches or under equipment |
| R134A Refrigerant | Environmentally friendly refrigerant |
| PD-2 Pump | Provides reliable, consistent flow for cooling applications (often found on CFT-33 units) |
Applications
-
Laboratory Instrument Cooling: Provides stable cooling for spectrophotometers, refractometers, and lasers .
-
Analytical Chemistry: Temperature control for reaction vessels and distillation equipment .
-
Material Testing: Maintaining sample temperatures for viscometers and other testing apparatus.
-
Biomedical Research: Cooling for medical imaging and diagnostic devices.
-
Process Cooling: Industrial-grade cooling for small to medium-scale processes .
-
Semiconductor/Electronics: Cooling for components and test equipment .
