CPAC – Cold Plate Air Cooled Heater/Cooler

Fast, precise, stable heating and cooling for your workstation

A highly compact fully integrated solution enabling you to control your reaction precisely and reach desired temperatures quickly.

Peltier Modules deliver a highly effective solution for controlling the reaction of biological and chemical samples. They enable energy-efficient, rapid and precise temperature changes. It’s the ideal technology when you need fast, precise and stable temperature curves. Inheco have been designing and providing Peltier based solutions for more than 20 years and have a range of devices that address the needs of our customers.

Choose from four versions of the Inheco CPAC (cold plate air cooled) heater/coolers to work with your liquid handling workstation and application needs.

Our CPAC Ultraflat occupies only one ANSI/SLAS plate position on deck. It’s truly compact with a profile of just 80 mm. Our CPAC Microplate has the same small footprint and delivers a profile of only 14 mm with the ventilation installed under deck, providing both excellent low-profile performance and off-deck air movement.

Our CPAC devices come in 2 versions:
The Standard versions have one Peltier module and are optimized to maintain your samples at constant temperature up to 70 °C. Temperature range 4 °C to 70 °C, uniformity of 0.5 K, accuracy of 0.3 K.
The HT 2-TEC versions have two Peltier modules for use when alternating temperature and fast temperature changes are required in different incubation phases during a workflow. Temperature range 4 °C to 110 °C, uniformity of 0.5 K, accuracy of 0.3 K.

Easy gripper access lets you comfortably use the gripper of your choice. You can use your preferred disposable with the CPAC, including vials and reservoirs – we offer over 200 adapters, manufactured in-house to ensure a perfect fit to the geometry of the disposable item, or can tailor an adapter to fit your needs.

Control your CPAC with the separate off-deck Inheco Single TEC Control unit (STC) which further minimizes deck space while reducing noise and temperature. Or choose the Inheco Multi TEC Control unit to control up to six devices in parallel when using several Inheco products on your deck. For software integration, an API is available and CPAC models are integrated with all major deck manufacturers.

Every Inheco device is designed, engineered and made in Germany and undergoes rigorous quality control before delivery. It comes with a global two-year warranty and full customer service including remote support, diagnostic and servicing options that focusses on minimizing operational downtime.

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Technical Specifications CPAC

CPAC type Microplate
Microplate HT 2TEC
Input voltage / max. current 12 Vdc / 5.0 A 24 Vdc / 4.7 A
Temperature range +4 °C to +70 °C [+39.2 °F to +158 °F] +4 °C to +110 °C [+39.2 °F to +230 °F]
Temperature range ambient 15 °C to +32 °C [+59 °F to 89.6 °F]
Temperature cycling No Yes
Max reachable temperature difference in the heating mode Up to 80 K
Max. reachable temperature difference in the cooling mode Up to 30 K
Sensor type Two PT100
Outer dimensions (H x W x L) 113 mm x 89 mm x 129 mm 113 mm x 89 mm x 129 mm
Weight incl. cord Approx. 1.0 kg
CPAC type Ultraflat
Ultraflat HT 2TEC
Input voltage / max. current 12 Vdc / 4.5 A 24 Vdc / 4.3 A
Temperature range +4 °C to +70 °C [+39.2 °F to +158 °F] +4 °C to +110 °C [+39.2 °F to +230 °F]
Temperature range ambient 15 °C to +32 °C [+59 °F to 89.6 °F]
Temperature cycling No Yes
Max reachable temperature difference in the heating mode Up to 80 K
Max. reachable temperature difference in the cooling mode Up to 30 K
Sensor type Two PT100
Outer dimensions (H x W x L) 80 mm x 89 mm x 129 mm 80 mm x 89 mm x 129 mm
Weight incl. cord Approx. 1.0 kg
Environmental conditions
Tolerable relative humidity:
Operation 30-80% relative
Transportation and storage 10-80% relative
Operation +15 °C to +32 °C [+59 °F to 90 °F]
Transportation and storage --10 °C to +60 °C [+14 °F to 140 °F]

* Condensate can prevent the CPAC from operating properly and can damage the CPAC. Condensate should be eliminated on a daily basis or more often, for example by heating cycles in between cooling cycles.

CPAC Accessories

Inheco IMP Measurement Plate

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Inheco Adapter Plates and Custom Adapter

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Inheco TEC Controller and Slot Modules

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Inheco Heated Lid

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Why use a Cold Plate Air Cooled Heater/Cooler?

Cold Plates using Peltier cooling technology are useful whenever your liquid handling lab needs cooling or heating surfaces. They offer heating and cooling plus temperature control all in one device. That makes them particularly suitable when you’re working with cell assays and biological and chemical samples in an automated deck.

What to look for in a Cold Plate Air Cooled Heater/Cooler?
Accurate and uniform heating and cooling are important, as are the ability to maintain temperature precisely. You may also need to consider temperature ramp rates and the maximum achievable temperature.
  • Temperature uniformity – delivering identical temperature across the entire block, with identical results for samples in the middle or on the edge of the block, and throughout the run.
  • Temperature accuracy – ensuring accurate and stable, reproduceable temperatures for the duration of the run, and for every sample in the block.
  • Uniform temperature change (ramp rates) – maintaining temperature uniformity across the entire block.
  • Temperature range – maximum and minimum temperature offered.
  • Small footprint – delivering the required performance while taking up as little space on deck as possible.
  • Low profile – to make pipetting and use of taller disposables easier.

Use of the Inheco CPAC

The CPAC is in regular use in NGS Sample Prep and is used for incubation by molecular biologists.

The CPAC Microplate is especially useful for enclosed liquid handling platforms (or workstations), when the deck or samples can overheat if too many devices without liquid cooling are integrated and waste heat is not efficiently removed. The CPAC microplate can be integrated into the deck with waste air routed below the deck.

The CPAC is often used to protect samples from degradation due to changes in heat, and to keep reagents, probes and end products at the correct temperature.

Precise, uniform heating, cooling and temperature control from Inheco CPAC

Heating and cooling
All CPAC models heat and cool using one or two Peltier units.
  • Peltier Modules or Thermoelectric Coolers (TECs) use the Peltier effect to create a heat flux between the junction of two different types of materials. A Peltier module is a solid-state active heat pump which transfers heat from one side of the device to the other side against the temperature gradient (from cold to hot), with consumption of electrical energy. TECs run with DC voltage, and it’s easy to control the heat transfer through the module by changing the current. When the polarity of the DC is switched, the TEC swaps from cooling to heating mode. That makes TECs an excellent solution when exact control of temperature and heating and cooling rates are needed.
  • Temperature range: +4 °C to +70 °C (TEC versions) or +4°C to +110°C (HT 2-TEC versions).
  • HT 2-TEC versions:
    Heating from 25 °C to 85 °C in 600 sec: 6 °C/min
    Cooling from 90 °C to 25 °C in 700 sec: 5.2 °C/min
Optional Heated Lid
  • The Heated Lid can be used as an add-on heater on top of the CPAC, to increase the rate of heating, improve temperature uniformity (especially for deep well plates), and enable longer incubation.
  • The Heated Lid helps to avoid condensation at the top of the plate, and reduce losses due to evaporation, without needing the space of a dedicated incubator.
  • The flexible cable and low weight (420 g) mean it can be transported by most gripper systems, while being heavy enough to seal the plate, so allowing full automated processing.
  • API available. Each Inheco CPAC is quick to connect, and ready for future developments in your lab.
Industrial Heating & Cooling GmbH
Fraunhoferstrasse 11
82152 Martinsried / Germany
Inheco Sales
Phone: +49 89 899593-120
Inheco Technical Support
Phone: +49 89 899593-121
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Phone: +49 89 899593-421
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