Drysyn Cool systems provide controlled cooling

An Asynt product story

Edited by the Laboratorytalk editorial team Dec 17, 2008

Asynt has revealed that its Drysyn Cool systems provide controlled cooling for chemistry at or below ambient without the need for jacketed reaction vessels or ice baths.

The Drysyn Multi Cool takes up to three flasks from 25ml to 100ml and combined with a suitable chiller/circulator and a standard magnetic stirrer gives a low-cost, compact reaction station with accurate temperature control down to - 30C.

The traditional ice bath requires constant user attention and is subject to temperature fluctuations, whereas the long-term, controlled performance of the Drysyn Multi Cool means that overnight runs - and indeed over-lunch runs - can be performed with confidence.

In addition to cooling, the Multi Cool can heat to up to 150C depending on the circulator system and fluids used.

With careful choice of circulator the chemist can choose to control temperature ramping and also ensure that exothermic reactions can be dealt with automatically.

Low temperatures often mean higher viscosities, requiring more powerful stirring than can be achieved with magnetic stirring.

As an alternative to magnetic stirring, the Vortex Cool stirrer system converts a single overhead stirrer into a powerful three-position parallel stirrer that complements the Drysyn Multi Cool.

An independent evaluation at the University of Huddersfield reported that: 'The Vortex system constitutes a useful addition for any laboratory conducting parallel synthesis, minimising both the necessary laboratory footprint required and reducing the cost by replacing three overhead stirrers with one.

Overhead stirring has the additional benefit that the grinding effects that can occur with magnetic stirrers on solids, especially crystals, are largely eliminated.

The Drysyn range of laboratory heating and cooling blocks provides efficient, safe temperature control for reaction flasks from 10ml to 5,000ml.

The Drysyn Multi concept was developed in collaboration with the Department of Chemistry at Cambridge University.