Surge Scientific · Model CH800 · Recirculating Chiller · -20°C · 750W
Recirculating Chiller
-20°C in 30 Minutes · 750 W Cooling · R290 Eco-Refrigerant
±0.3 K Stability · 22 L/min Flow · 5 L Bath · 4.3-inch Touchscreen · Stainless Steel · <55 dB · Bench-Fit Footprint
The CH800 delivers laboratory-grade closed-loop cooling down to -20°C with a 30-minute cool-down from room temperature — and does it in a 235 × 468 × 535 mm bench-friendly footprint that fits inside a fume hood. 750 W of compressor cooling power, ±0.3 K temperature stability per DIN 12876, 22 L/min recirculating pump flow, and R290 eco-refrigerant compliance — engineered to pair with rotary evaporators, reactor blocks, vapor barriers, and heat exchangers without dragging tap water through your sink line for hours.
Why a Dedicated Recirculating Chiller Beats Tap Water
Most labs running a rotary evaporator or jacketed reactor start with the simplest cooling solution: connect a hose to the tap, run the cold water through the condenser, and let it drain. It works — until you actually look at what it costs. A typical rotary evaporator condenser runs 2–4 L/min of water for 4–8 hours per session. That's 500–2,000 L of treated municipal water per day going straight down the drain. Across a year, the water bill alone often exceeds the price of a chiller.
And tap water has a problem the bill doesn't even capture: it's typically 15–22°C, which is far too warm for efficient solvent recovery on volatile organics like dichloromethane, ether, or pentane. Vapors slip past the condenser, end up in the vacuum pump, and your solvent recovery drops to 60–70%. The CH800 holds your condenser fluid at any temperature from -20°C to ambient, with ±0.3 K stability — so cold-trap chemistry actually traps cold, and your solvent recovery climbs to 95%+. Closed-loop. Zero water waste. Genuinely cold.
-20°C in 30 Minutes
Fast cool-down: RT (25°C) to -20°C in ≤30 minutes. 750 W cooling capacity at 20°C, 500 W at 0°C, 200 W at -20°C — real cooling power across the full operating range.
±0.3 K Stability
DIN 12876-compliant ±0.3 K temperature stability with advanced proportional cooling control. Your cold trap stays cold, your solvent recovery stays consistent, your reaction temperature stays predictable.
R290 Eco-Refrigerant
Uses R290 environmental-friendly refrigerant — low GWP, no ozone depletion, regulatory-future-proof. No HFC retrofit forced on you in three years when the next phase-out hits.
4.3-inch Touchscreen + RS485
4.3-inch LCD touchscreen for setpoint, monitoring, and alarms. RS485 communication interface for integration with reactor controllers or LIMS. Auto-recovery after power outage — picks up where it left off.
"Closed-loop. -20°C. 30 minutes. Stop letting your solvent recovery rate be limited by your tap water temperature." — For any rotary evaporator, jacketed reactor, or cold-trap workflow, the CH800 is the cooling upgrade that pays for itself in solvent recovery alone.
Key Features
- Working temperature -20°C to ambient (RT)
- Fast cool-down: RT → -20°C in ≤30 min
- 750 W cooling capacity at 20°C
- 650 W cooling capacity at 10°C
- 500 W cooling capacity at 0°C
- 400 W cooling capacity at -10°C
- 200 W cooling capacity at -20°C
- Pump flow up to 22 L/min
- Pump pressure up to 1 bar
- 5 L bath volume (5.3 L max storage)
- Temperature stability ±0.3 K (DIN 12876)
- Temperature display accuracy ±0.3°C
- Advanced proportional cooling control
- R290 eco-refrigerant — low GWP
- Stainless steel bath construction
- Visible water level indicator
- Overflow port protection
- Convenient liquid filling and draining
- 4.3-inch LCD touchscreen interface
- Real-time setpoint and monitoring
- Over-current compressor protection
- Overheating protection with audio alarm
- Automatic recovery after power outage
- RS485 communication interface
- Compact 235 × 468 × 535 mm footprint
- Fume-hood compatible dimensions
- Lightweight ≤35 kg
- Low noise <55 dB
- Dual voltage 100–120V / 200–240V
- 2-year all-inclusive warranty
Ideal Applications
Rotary Evaporator Cooling
Pair with rotary evaporators for solvent recovery from volatile organics — DCM, ether, pentane, ethanol — where a 5°C condenser dramatically outperforms 20°C tap water.
Reactor & Synthesis Cooling
Jacketed reactor blocks, parallel synthesis platforms, exothermic reaction control, and Schlenk-line vapor barriers — anywhere a stable sub-ambient temperature anchors the process.
Heat Exchanger & Lab Cooling
Photochemistry stages, optical instruments, NMR cryostat support, and any heat exchanger application where closed-loop, water-saving cooling replaces wasteful tap-water plumbing.
What's in the Box
The CH800 ships ready for connection — bench-mount design, ready to plumb into any standard rotary evaporator, jacketed reactor, or heat exchanger. Power supply: 100–120 VAC or 200–240 VAC, 50/60 Hz.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model / SKU | CH800 |
| Working Temperature Range | -20°C to ambient (RT) |
| Cooling Capacity @ 20°C | 750 W |
| Cooling Capacity @ 10°C | 650 W |
| Cooling Capacity @ 0°C | 500 W |
| Cooling Capacity @ -10°C | 400 W |
| Cooling Capacity @ -20°C | 200 W |
| Cool-Down Time | RT (25°C) → -20°C in ≤30 min |
| Pump Flow (Max) | 22 L/min |
| Pump Pressure (Max) | 1 bar |
| Bath Volume | 5 L (max storage 5.3 L) |
| Temperature Stability | ±0.3 K (DIN 12876) |
| Temperature Display Accuracy | ±0.3°C |
| Cooling Control | Advanced proportional cooling |
| Refrigerant | R290 (eco-friendly, low GWP) |
| Bath Material | Stainless steel |
| Display | 4.3-inch LCD touchscreen |
| Communication Interface | RS485 |
| Safety — Compressor | Over-current protection |
| Safety — Bath | Overheating protection with audio alarm |
| Power Recovery | Automatic — restores previous parameters |
| Power Supply | 100–120 VAC / 200–240 VAC, 50/60 Hz |
| Wattage (Max) | 750 W |
| Dimensions (W × D × H) | 235 × 468 × 535 mm |
| Weight | ≤35 kg |
| Noise Level | <55 dB |
| Warranty | 2-year all-inclusive |
Surge Scientific Warranty & Support
This instrument is sold through Surge Scientific, your trusted laboratory equipment partner. Our product specialists are available Monday–Friday for assistance. The CH800 is backed by a 2-year all-inclusive manufacturer's warranty. Contact us at info@surgescientific.com or reach out directly to our support team at 855.943.3344 for pre-sales questions, rotary evaporator pairing, plumbing & tubing guidance, fume-hood installation, and technical assistance.