Reaction blocks

VariSynth – parallel synthesis the easy way

Are you looking for a flexible reaction block for manifold applications? VariSynth might be the answer. One instrument allows you to run different reactions in parallel from 2 up to 2000 ml. The VariSynth System is available with two or four zones. Each can run a 2000 ml reaction or multiple smaller reactions up to 20 x 2 ml using our special inlets.
You can choose between integrated electric cooling to -10°C or a powerful external chiller for lower temperatures down to -70°C.

Individual tempering – individual agitation – individual reaction containers

Each zone of the VariSynth works independently. You can run up to four similar or different reactions in parallel without time-consuming preparation.
Everything is operated from a large, easy-to-use, colored touchscreen which displays all of the necessary information. The design, colors and functionality can even be adapted to your needs.
As a one-stop shop, LAIX also offers a large amount of accessories such as glassware, sensors or stirrers.


  • 2 or 4 positions
  • Glassware 2 to 2000 ml, parallel use with inlets
  • Medium or block controlled tempering
  • Electric heating to +250 °C
  • Electric cooling to -10 °C (max 500 ml)
  • External cooler to -70 °C
  • Stirring speed 100 to 1500 rpm
  • Reflux condenser with flow control
  • Inert gas
  • Colour touch display
  • Temperature probes stainless, PTFE or laminated
  • PTFE stirrers in different sizes and designs
  • Standard or customized glassware
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