QTI’s 6038 Series of bottle probes is ideal for monitoring the temperature of liquids in cold storage including those that need to be monitored for the fermentation process. This series features a sterile stainless-steel housing with an air-tight rubber stopper which prevent aeration or harmful contaminants. QTI can customize these sensors in a variety of ways. Sensor resistance values and accuracy, as well as cable length and color are all able to be specified.