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Beer Dispensing

Mixed Gas and Beer go hand in hand

Mixed gas is a crucial component in beer dispensing, playing a key role in maintaining beer presentation and consistency. It ensures that brewers and sellers are able to deliver the beer exactly as expected, which is essential for maintaining a strong brand image.

At BSL, we understand that meeting customer expectations is of utmost importance and we know that consistency is key in providing a great drinking experience for your customers.

Using the right mixed gas ratio can offer huge advantages for sellers, pub landlords and managers.

Excessive foaming or fobbing during beer pouring or storage can result in significant amounts of beer and gas waste. By carefully controlling the storage and dispensing conditions (such as using the appropriate mixed gas, controlling cellar temperature and ensuring correct dispense gas pressure), you can keep waste to a minimum.

Using a gas mixer with 100% CO2 and 100% N2 can significantly reduce your costs when compared to using pre-mixed gas cylinders. BSL Beer Dispense Gas Mixers offer the quality and repeatability you need at the most economical price. Even within a short period of time, you will see noticeable cost savings.

Our Cellar-Mix Panels range offers four outlet options, including 100% CO2, 60% CO2 / 40% N2, 50% CO2 / 50% N2, 30% CO2 / 70% N2. These ratios have been proven to work well with various types of beers. However, if you desire a custom mix ratio, we can create a bespoke panel for you!

4 Important Tips for Beer Dispensing

The Cellar — A clean cellar is key to keeping beer from spoiling before its best before date. Cleaning once a week with the proper sanitising products will prevent bacteria from growing. This in turn will also help the air quality and again help to stop the beer from spoiling.

Regular maintenance of your cellar will help equipment to run smoothly and effectively. Dirt, dust and mould can obviously have a negative effect on equipment.

Every night after closing, it is a good idea to turn of the gas to the beer lines. This will prevent the beer from being over-carbonated which causes fobbing and foaming.

Cellar Temperature — Most cellars will use remote coolers to bring the temperature down to the correct dispensing temperature and therefore the coolers should be running constantly.

Anything above 12 ̊C and bacteria can grow in the beer, making the beer foam more during dispense. Any harsh fluctuations in temperature can effect the beer quality of course.

Beer Lines — Same as your cellar, your beer lines need regular cleaning to prevent the beer from becoming infected with bacteria and wild yeast. These will cause the beer to spoil and create carbon dioxide, leading to fobbing and foaming. If the cleaning is not thorough, mould, limescale and beer stone can build up in the lines. This will affect the beer and even your dispensing equipment.

Beer Gas for Dispensing — Just like making sure your cellar and beer lines are clean, the gas you dispense with should also be clean.

BSL Gas Technologies Ltd make and supply Gas Mixers specifically made for the Beverage Dispense. Not only are our Gas Mixers accurate and efficient but they do not need an electrical supply either.  Saving on your electric bill! This also means you are less limited to where in the cellar you put it.

Because our Gas Mixers use a pressure mechanical  system, if a supply gas is lost, no gas will pass through the Mixer. Therefore, no wasted gas being pumped into the cellar.

We can also supply Gas Filters or have systems with the Gas Filters incorporated into them. Making your whole process more protected and clean.


The CF5000 package has three key parts. The Gas Mixer, the Gas Analyser, and the stand itself. The first part is the Gas Mixer, which uses the BSL Mass Flow Control Valves to make the mixed gas. These are well suited for this application, not least of all because they have a low pressure drop across them to produce high flows. What this means is that they can supply high flows of mixed gas even when you have some gases coming from other than liquid gas sources.

Nitrogen is increasingly delivered from Nitrogen Generators and this tends to be at pressures less than 10 bar g. The BSL Mass Flow Control Valves are perfect for this type of application.

The Gas Analyser is an optional item to back up the adjustable gas mixer. We have several options. Starting with a simple display and alarms to a more complex display, alarm, and output signals for use with your existing Management Control Systems and software for recording and reporting.

The third part is the very robust stainless-steel stand. It is deliberately made this way so that it can be washed down with cleaning fluids that will not damage it in any way. Those that would benefit the most are therefore food and beverage factories, where everything must be cleaned down periodically. The stainless-steel stand will cope with all the usual cleaning fluids.

In one particular Brewery, this package has been used in a number of areas of the plant. It has been used to feed the Keg Racking Area. Another unit has been used for blanketing the storage vessels. And outside of the factory another unit has been used to create the mixed gas to fill gas cylinders of beverage dispense gases reliably and accurately. A very versatile package!

Beer Dispense Info Pack

BSL Catalogue 2017/2018

Short Form Catalogue 2021/2022