ALab™ DCP-5 Low-Temperature Cooling Circulator
Product Detail
ALab™ DCP-5 Low-Temperature Cooling Circulator regulates temperature by pumping low-temperature cooling fluid through connected equipment. It covers −20 to 40 °C with ±0.3 °C control accuracy under intelligent PID control with a PT 100 sensor, delivers 700 W of cooling at a 20 °C setpoint, and circulates from a 4.5 L tank — a compact laboratory recirculating chiller for rotary-evaporator condensers and process cooling.
Why choose the DCP-5
How much cooling does your process need?
The duty a condenser has to remove is set by how fast solvent evaporates and how much latent heat that solvent carries — water demands roughly three times the cooling of ethanol at the same rate. Pick your solvent and evaporation rate to compare the condensing duty with the DCP-5 rating:
Model: the condensing duty is the latent heat released as vapor condenses, Q = rate × density × ΔHvap, using enthalpies of vaporization at the normal boiling point. It excludes sensible cooling of the vapor and returning coolant, ambient gain in the hoses and any heat the bath adds, so real duty is higher — allow margin. The 700 W line is the manufacturer’s single published figure at a 20 °C setpoint; capacity at lower setpoints is not published and is lower. A schematic teaching tool, not selection software.
Product specifications
| Parameter | DCP-5 |
|---|---|
| Brand | ALab™ by ACS Material |
| SKU # | ALDCP500 |
| Temperature Range | −20 to 40 °C |
| Temperature Control Accuracy | ±0.3 °C |
| Temperature Control Method | Intelligent PID |
| Control Temperature Sensor | PT 100 |
| Temperature Display | LED · display accuracy 0.1 °C |
| Cooling Capacity at 20 °C | 700 W |
| Refrigerant | R-404A |
| Maximum Pump Pressure | 0.3 bar (separate limit from maximum flow) |
| Maximum Circulation Flow | 22 L/min |
| Tank Capacity | 4.5 L |
| Internal Diameter of External Pipe Mouth | 8 mm |
| Instrument Fixing Method | Floor standing |
| Continuous Operation | 100% |
| Permissible Ambient | 5 to 40 °C · 80% RH |
| Dimensions [W×D×H] | 230 × 490 × 450 mm |
| Power Supply | 100–120 V / 200–240 V, 50/60 Hz |
| Power / Current | 700 W max. / 3.5 A max. |
The DCP series
Three sizes share the same −20 to 40 °C range, R-404A refrigerant, LED display and intelligent PID control. They differ in cooling capacity, tank volume and pump pressure.
| Model | Cooling capacity @20 °C | Tank | Max. pump pressure | Control accuracy |
|---|---|---|---|---|
| DCP-5 | 700 W | 4.5 L | 0.3 bar | ±0.3 °C |
| DCP-17 | 2400 W | 17 L | 1.5 bar | ±0.5 °C |
| DCP-20 | 3200 W | 20 L | 1.5 bar | ±0.5 °C |
Maximum pump flow rate is 22 L/min across the series. Maximum circulation flow is 22 L/min across the series. Maximum flow and maximum pump pressure are separate limits; no pump curve is published. The DCP-17 and DCP-20 are shown for series context and are not listed as separate products at this time — they are quoted on request.
Sizing against the still. For many benchtop organic-solvent duties the estimated latent load falls below the 700 W reference capacity at 20 °C — but final suitability depends on the required coolant setpoint, evaporation rate, heat losses and the capacity actually available at that setpoint. At the RE100-Pro’s maximum water rate of 1.56 L/h the latent duty alone is close to 1 kW, which is beyond this unit. For the 20 L RE200-Pro, cooling is sized against the process at quotation. Use the estimator above for a first look, then confirm with us.
FAQ
Is 700 W enough for my rotary evaporator?
It depends on the solvent and the rate, not on the still. At 1.5 L/h the latent duty is roughly 275 W for ethanol but close to 1 kW for water — water carries about three times the latent heat per litre. The estimator on this page gives a latent-only first-pass number; add margin for sensible cooling, hose gain and equipment losses. The 700 W figure applies at a 20 °C coolant temperature, and most condenser duties run colder than that, so confirm the capacity available at your setpoint before deciding.
Does the cooling capacity change with the setpoint?
Yes — a refrigeration circuit delivers less cooling the colder the setpoint. The manufacturer publishes 700 W at 20 °C only; capacity at, say, −10 °C is lower and is not published. If your process runs near the bottom of the range, tell us the setpoint and duty so the selection can be confirmed.
What coolant should I use?
Below 0 °C water alone will freeze, so a heat-transfer fluid suitable for the setpoint is required. The manufacturer’s catalogue does not specify approved fluids or concentrations — follow the operating manual, and note that fluid choice affects viscosity and therefore the flow the pump can actually deliver.
How does it connect?
The manufacturer lists an external pipe-mouth internal diameter of 8 mm, a maximum circulation flow of 22 L/min and a maximum pump pressure of 0.3 bar — the two maxima are separate limits, not a simultaneous operating point, and no pump curve is published. Keep hose runs short and insulated for low-temperature work, and check that the connected equipment tolerates the pump pressure. Ask us for the connector detail if your setup needs an exact fitting match.
Which model should I choose?
The DCP-5 covers benchtop condenser duties at 700 W with a 4.5 L tank. The DCP-17 (2400 W, 17 L) and DCP-20 (3200 W, 20 L) carry pilot-scale duties and deliver a higher pump pressure of 1.5 bar, with ±0.5 °C control accuracy.
Can it be used for something other than a condenser?
Yes — the manufacturer also lists reaction cooling, pharmaceutical and biotech work such as freeze drying, semiconductor process cooling and food processing — in each case subject to the temperature and cooling capacity the application actually requires, within the −20 to 40 °C range.
Related
ALab™ is a trademark of ACS Material, LLC. Disclaimer: ACS Material, LLC believes the information on this page is accurate and represents the best and most current information available to us. Specifications reflect the manufacturer's current documentation; final configurations are confirmed at quotation — always refer to the model datasheet for guaranteed ratings, and follow your laboratory's safety procedures for heat-transfer fluids and low-temperature operation. The interactive estimator is a schematic teaching tool, not selection software. ACS Material makes no representations or warranties, express or implied, regarding suitability for any purpose, and will not be responsible for damages resulting from use of or reliance upon this information.