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Microcool

Circulation chillers for reliable continuous operation in the lab and in research from -10 up to 40 °C

LAUDA Variocool

The LAUDA Microcool product line has been designed as a circulation chiller line with four compact models and cooling capacities from 0.25 to 1.2 kW. The user interface with large LED display and the membrane keyboard make the devices easy to use. An RS-232 interface and alarm contact are integrated as standard.

What is unusual in this price category of circulation chillers is the high-quality block pump with magnetic coupling. The magnetic coupling of pump and electric motor exclude sealing problems on the pump shaft. LAUDA Microcool circulation chillers are used wherever heat needs to be dissipated reliable and fast, e. g. in laboratories for rotary evaporators, distillation systems or analytical devices.

  The Microcool advantages Your benefits
  • Four device types in three housing sizes
  • Cooling capacities from 250 W up to 1200 W
  • Clear device portfolio for simple selection
  • Covers the majority of basic lab uses
  • User interface with large LED display and membrane keyboard
  • Autostart timer and auto-shutdown function
  • Illuminated window for checking heat transfer liquid level
  • Simple and intuitive use
  • Timer-based activation and deactivation of the circulation chillers
  • Quick optical detection of the filling level
  • Block pump with magnetic coupling of pump and electric motor
  • Integrated adjustable bypass and pressure gauge at MC 600, MC 1200 and MC 1200 W
  • Integrated overflow connection
  • Prevents sealing problems at the pump shaft
  • Integrated pump pressure adjustment for connected delicate glassware or high pressure for max. flow rate
  • Controlled filling of the devices
  • RS-232 interface and alarm contact standard
  • System integration into processes without additional costs
  • Compact design and low space requirements
  • Integrated filling funnel on top of the device
  • Easily removable front grid
  • Saves valuable laboratory space
  • Simple and safe filling
  • Easy-to-clean condenser
LAUDA Microcool Circulation Chillers LAUDA Microcool Circulation Chillers

Microcool Circulation chiller with cooling capacity of 250 Watt

The compact design MC 250 model makes it ideal for being positioned on the benchtop. The circulation chiller is equipped with a magnetic coupling pump. This supplies a pump pressure of 0.35 bar and a maximum pump flow of 16 L/min.

Microcool Circulation chillers with cooling capacities of 600 and 1200 Watt

The 600 and 1200 Watt cooling capacity models are floor standing instruments designed to fit underneath the lab bench. They are equipped with a pressure gauge to display the pressure and casters which can be controlled and locked. Pump pressure can be controlled via the integrated bypass. At 1200 Watt, the most powerful device is also available in a watercooled version as the MC 1200 W.

Microcool Circulation chillers

Technical features MC 250 MC 350 MC 600 MC 1200 MC 1200 W
Working temperature range °C -10...40 -10...40 -10...40 -10...40 -10...40
Temperature stability ±K 0.5 0.5 0.5 0.5 0.5
Cooling output at 20 °C kW 0.25 0.35 0.6 1.2 1.2
Pump pressure max. bar 0.35 0.35 1.3 1.3 1.3
Pump flow L/min 16 16 35 35 35
Cat. No. 115 V; 60 Hz LWM 418 LWM 419 LWM 420 LWM 421 LWM 422

* Working temperature range is equal to ACC range


EPDM tubing

Cat.No. Description di(mm) de(mm) Temperature range °C Pressure range max.bar
RKJ 111 Polymer tubing 9 11 10…120 1
RKJ 112 Polymer tubing 12 14 10…120 1
LZS 021 Insulated 12 21 -35…90 -
RKJ 031 Reinforced fibres 13 (1/2“) 19 -40...100 20
RKJ 032 Reinforced fibres 19 (3/4“) 27 -40...100 20
RKJ 009 Tube insulation 23 33 -50…105 -
RKJ 013 Tube insulation 29 39.5 -50…105 -


Adapter G 3/4”

Cat. No. Designation Description
LWZ 016 Nipple 3/4“ Screw cap, 1/2“ nipple
LWZ 040 Nipple 3/4“ Screw cap, 10 mm nipple


Stainless steel hose clamps

To secure hoses

Cat. No. Description
EZS 012 Hose clamp for external diameter 10-16 mm, 1/2“
EZS 013 Hose clamp for external diameter 12-22 mm, 1/2“
EZS 015 Hose clamp for external diameter 20-32 mm, 3/4“


Heat transfer liquids

Cat. No. Designation Temperature range
LZB 120 Aqua 90, 5 L 5…90
LZB 220 Aqua 90, 10 L 5…90
LZB 320 Aqua 90, 20 L 5…90
LZB 109 Kryo 30, 5 L -30…90
LZB 209 Kryo 30, 10 L -30…90
LZB 309 Kryo 30, 20 L -30…90

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