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The Postnova PN4020 Flow FFF Channel Thermostat ensures this and offers precise and stable temperature control ranging from 5ºC up to 90ºC to bring even your most demanding FFF separations under control. The unit allows achieving a run to run reproducibility which is not possible with other designs. The forced-air concept with large front door allows easy access to the Flow FFF channel and offers maximum flexibility and ease of handling. Forced air heat-exchange is the most convenient way to control the Flow FFF channel temperature. In contrast to heater blocks there is maximum freedom for different channel dimensions and unlike water jackets you have easy access to the Flow FFF channel column. Even the injection valve can be mounted in the thermostat!