OptiMax HFCal - Overview - METTLER TOLEDO

OptiMax HFCal

Uncovering Scale-up and Safety Issues

OptiMax HFCal is a reaction calorimeter that generates calorimetric information under both isothermal as well as non-isothermal conditions.  The system is Plug & Play and ready to run any desiged unit operation automatically - or manually if preferred.

Heat Flow Calorimetry – Simple and Accurate
OptiMax HFCal reproducibly delivers information to characterize and scale-up processes ensuring they are safe at scale.

At the push of a button, iControl software automatically calculates heat data, including:

  • Heat transfer coefficient
  • Specific heat of the reaction mass
  • Heat flow for isothermal and non-isothermal conditions
  • Enthalpy
  • Thermal conversion
  • Adiabatic temperature rise

iControl Software creates a report including trends and tables of experimental results.

Heating and Cooling – No Additional Cryostat Needed
Heating and cooling is fast and does not require a cryostat.  The electrical heating and  Peltier cooling ensure precise temperature control from -40 °C to 180 °C.

Quality Information
All events and data are recorded automatically, making experiments traceable and reproducible. At the end of the experiment, the relevant data is summarized and a report with tables and trends is generated automatically. For further processing, interpretation or storage purposes, iC Data Center or the Microsoft® Excel® can be used.

OptiMax HFCal is available as an all inclusive Starter Kit (30064130) or can be obtained by upgrading an existing OptiMax 1001 reactor system with the OptiMax HFCal Upgrade Kit (30050150).

Specifications - OptiMax HFCal
Dimensions (WxDxH) 120 mm x 40 mm x 170 mm
Precision Heat Transfer Typically +/- 3%
Accuracy and Precision Specific Heat Typically +/-10%
Accurate Heat Flow Isothermal conditions: ± 3% to 5%;Non-isothermal conditions: ± 5% to 10%;Based on a comparison of qr_hf with qc resp. ∫qr_hf with ∫ qc
Calorimetry Type Heat Flow
Material Number(s) 30050150


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OptiMax HFCal


Chemical Synthesis Reactors

The Dosing Unit DU SP-50 allows unattended dosing combined with safe control of the reaction temperature in conjunction with the EasyMax and OptiMax synthesis reactor systems.
Measuring and controlling reaction parameters is essential in every step of chemical, product and process development. Depending on the procedure, only a few or many parameters, such as temperature, pressure, pH, turbidity or voltage, current and the like need to be measured or controlled. Measuring or controlling reaction parameters becomes easywith the Universal Control Box (UCB) independent of the type of sensor or control device used.
The OptiMax PTFE reactor cover is a robust alternative to the standard glass cover.
The OptiMax magnetic drive combined with glass reactors is the preferred solution for chemistry and development labs. Designed for the OptiMax, the magnetic drive prevents solvent losses and gas leaks. The magnetic drive is corrosion resistant and ideal for reactions that consume gaseous products or product off-gas.
The OptiMax magnetic drive combined with glass reactors is the preferred solution for chemistry and development labs. Designed for the OptiMax, the magnetic drive prevents solvent losses and gas leaks. The magnetic drive is corrosion resistant and ideal for reactions that consume gaseous products or product off-gas.
Ideal for chemical synthesis, reaction optimization and manufacturing of small quantities of intermediates or final products, the 1000 mL OptiMax One-Piece Glass Reactor is versatile, easy-to-set-up and guarantees good mixing.
Ideal for chemical synthesis, reaction optimization, crystallization studies and scale-up experiments, the 1000 mL OptiMax Two-Piece Glass Reactor is versatile, has a bottom drain valve and is easy-to-set-up. The optional heat flow calorimetry kit provides you with additional information regarding the scalability and criticality of the reaction.
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OptiMax HFCal


Cooling Performance0°C   35 W 
20°C 65 W
40°C   95 W
Temperature Range-40°C to 180°C (jacket temperature)
Control Modesisothermal and isoperibolic, constant or ramp, reflux, distillation & crystallization
Stirring30 rpm to 1200 rpm
DimensionsThermostat: 388 mm x 414 mm x 539 mm
Power Supply100 V to 240 V AC, 50 Hz to 60 Hz, 1300 VA
OperationiControl software for calorimetric applications
Graphical touchscreen and/or iControl Software
TypeSingle piece or two piece (with bottom drain valve)
Volume1000 mL
Pressure50 mbar to 1 bar
MaterialDuran® glass
StirrerPitch-blade (glass, Alloy 22)
Anchor (glass, Alloy 22)
Half-moon (PTFE for single piece reactor)
TypeHeat Flow
Calibration HeaterMax. 20 W
Precision Heat TransferTypically ± 3%
Accuracy and Precision Specific HeatTypically ± 10%
Accuracy Heat FlowTypically ± 3% to 5%, under isothermal conditions
Typically ± 5% to 10%, under non-isothermal conditions
Sensitivity≤0.1 W measured as standard deviation of qr under steady state conditions.
Peak-to-peak noise is ≤ approximately 0.4 W.
HFCal Module 
Power and Data InterfaceDirect connection to CAN interface of standard OptiMax,
no additional power supply or PC connection required
Data LoggingVia iControl Software
Dimensions120 mm x 40 mm x 170 mm
SoftwareiControl 5.2 or higher required, HFCal license
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