Do you make cuts on a reflux still?
Andrew Mclaughlin
Updated on February 25, 2026
A more complex still with a chamber called the ‘reflux’ condenser, where steam is filtered and some of the unwanted elements are returned to the boiling vessel. You don’t need to make ‘cuts’ on this type of still (only discarding the foreshots).
How does a Boka reflux still work?
As the boiler is heated, vapors begin to rise through the column. When these vapors come in contact with the condenser, they condense to a liquid and fall back down the column where they are collected by the slanted plates for takeoff or return to the column.
Is a reflux still good for whiskey?
Most people find pot stills as versatile since it could be utilized to flavor schnapps, whiskey and rum. It also decreases a finished wash’s volume and removes yeast cells. A reflux still is effective in creating a flavorless and odorless product.
What is the purpose of a reflux still?
Unlike pot stills, reflux stills are designed to create higher proof with little to no flavor alcohol. Inside the still is a fractioning column that allows the reflux of liquid to help condense the rising vapor and increase the efficiency of distilling, thus increasing purity.
How is reflux different from distillation?
Distillation is the process of separating components based on their different boiling points. Reflux is the return of process fluid after it has been cooled, condensed, heated or boiled.
Why is reflux done in distillation?
The purpose of reflux is to provide down-flowing liquid throughout the rectification section to contact with the up-flowing vapor in order to achieve stage-by-stage equilibrium heat and mass transfer and, hence, purification of the top product.
How can I speed up distillation?
Three parameters you need to boost your distillation rate
- The heating bath temperature. Of course, going as high as possible seems to intuitively make sense.
- Condenser loading and pressure. One approach to reducing the heating bath temperature without affecting the distillation rate is to adjust the pressure.
- Flask size.
How does the speed of distillation affect the reflux ratio?
The speed of distillation, and therefore the reflux ratio, is controlled by the speed and temperature of the cooling water being run through the lines. In the past, most of these designs used two cooling lines, one in the middle to lower portion of the column and another directly above it near the top of the column.
What skills do you need to operate a reflux still?
Understanding and managing a reflux still column is just one of the basic skills needed to operate distillery equipment. Balancing the temperature and alcohol by volume (ABV) is important when managing the performance of the reflux column still. Adjusting the reflux temperature can control the ABV, making it increase or decrease.
How do you operate a valved reflux still?
Operating the valved reflux still is much easier than running the Internal Reflux still because the valves on the still head provide direct control of the distillation and reflux rate. As with the Internal Reflux checkout run, you should begin the checkout run by filling the boiler with a gallon or two of water.
How do you clean a reflux still?
When the unit has reached room temperature, disconnect the cooling hoses, and back-flush the column with water. Then remove the cover and clean and flush the boiler. Operating the valved reflux still is much easier than running the Internal Reflux still because the valves on the still head provide direct control of the distillation and reflux rate.