FERMENTER
In a fermenter, the process liquid normally contains sticky components fouling the prism. Therefore, a prism wash at regular intervals is needed, but without the wash medium entering the process. For that reason, the ThinProbe refractometer is used combined with a retractable probe housing.
The whole measurement optics is crammed into 12 mm (1/2") diameter probe.
Due to the small diameter probe, ThinProbe makes a fast and accurate temperature measurement.
For a small vessel fermenter, e.g. a prototype, autoclavability of the probe may be needed. Then the model PolyChrome must be used.