Email: Password:
Tri-State Carbonation Service

Mixed Gas Dispense Systems 

Tri State Beer Foam Guide

The rise in draft beer has forced restaurants, bars and breweries to pay attention to what it takes to provide the highest quality draft beer.  

One integral component of a draft dispensing system is the gas that is used to "push" the product from the keg to the tap.  The right mixture of CO2 and Nitrogen guarantees quality and reduce operating costs.

The Mixed Gas Dispense Systems with its Nitrogen (N2) gas generator is coupled with your CO2 tank.  The system not only produces the sufficient quantity of N2 simply generated from the air, but as needed, provides three precise mixtures of gas to meet your quality kegged product requirements.

By Using This System, You Will:

  • Generate beverage grade nitrogen on site
  • Eliminate over & under carbonation
  • Provided with or without internal gas blender
  • Compact technology takes up minimal space
  • Maintains product quality as intended by the brewer
  • Increases customer satisfaction & loyalty
  • Best value in Nitrogen Generation Technology

The Tri-State Carbonation Nitrogen Generators system will eliminate over carbonation and/or flat beer from you beer systems.

Learn More
Mixed Gas Dispense


What is a Nitrogen Generator?

What are the benefits of using a Nitrogen Generator?

Mixed Gas Dispense System Savings:

When using the Mixed Gas Dispense System along with your CO2 tank, you expect to see average savings of:

Based on Half Barrel Keg
14 Oz. Pints
$3 Revenue per Pint
Flat =
Over Pour
Foamy =
Waste in Keg
Waste per keg 4 - 6 % 7 - 10 %
Oz. lost per keg 79.4 - 114 oz. 138.9 - 198.4 oz.
Pints lost per keg 5.7 - 8.5 pints 9.9 - 14.2 pints
Lost revenue per keg $17.10 - $25.50 $29.70 - $42.60
Lost revenue per month $684 - $1,020 $1,188 - $1,704
Lost revenue per year $8,208 - $12,204 $14,256 - $20,488
LOST PROFIT PER YEAR $6,997 - $10,373 $12,118 - $17,415

Foamy Beer

Tri-State Carbonation_Foamy Beer

Foamy beer is caused by the use of 100% carbon dioxide as a dispense gas in draft systems.

By using solely CO2 to pressurize the beer, the total concentration of CO2 in the beer skyrockets, creating foamy beer from the taps.  This is manifested as excess head, which is poured out into the tray by the bartender as wasted product.  

It also creates foamy residue in the keg, meaning that an additional 5% of each keg's beer is wasted.

Finally, the greatest offense of foamy beer is to the customer.  Excess head that must be poured out spills over the side of the glass, making it wet and sticky.

Furthermore, the raised carbon dioxide content distorts the flavor of the beer, causing it to taste sharp. 

Perfect Pour

Tri-State Carbonation_Perfect Pour

Using the proper gas mixture is one of the most important factors that influence pouring a great pint of beer.

All draft beers are brewed with a certain amount of carbon dioxide dissolved into the beer and it is important to maintain that level of CO2.  

A 75% nitrogen and 25% CO2 for "nitrogenated" beers like Guinness, Kilkenny, Caffrey's, etc. which have a relatively low carbonation content (1.2 volumes) and a 50% N2 and 50% CO2 for domestic and craft beers which have a higher CO2 content (approx 2.5 volumes). 

Maintaining the carbonation content in beer allows you to pour the proper "2 finger" head on every beer from the top to the bottom of each keg resulting in increased yields and profits for your establishment.

Nitrogen (N2) is the perfect choice as a second gas for several reasons.  Many beers use nitrogen as an ingredient.  The best-known example and the originator of the concept is Guinness Stout on draft.  The Guinness brewers go to great pains to dissolve nitrogen in the beer, which improves the quality of the head.  

Nitrogen (N2) is the ingredient responsible for the "whippedcream-like" foam in the Guinness and other beers like Kilkenny, Boddingtons, Caffrey's and Murphy's Stout.  N2, in the right proportion, is required in the gas used to push these beers.  Without it, the dissolved N2 would come out of solution and these beers would not be the same.

Nitrogen is one hundred times harder to dissolve in beer than CO2.  While this is a challenge for the brewers mentioned above, it makes N2 a good choice for dispensing "normally carbonated" beers.  N2 is not readily absorbed, does not react chemically under normal circumstances and will not affect beer flavors.  N2 is 78% of the air we breathe, making it safer and readily available.  

Mixed Gas Dispense Systems (aka nitrogen generators) filter relatively pure N2 from air and can be a very economical source of Nitrogen.  They can be built or used with a blending device and a CO2 source to provide all the gas for any bar or facility.

Flat Beer 

Tri-State Carbonation_Flat BeerFlat beer is caused by distribution methods which use compressed air or the improper mix of beer gas (25% CO2).

A 25% CO2 mix does not have enough CO2 for proper dispense of most non-nitrogenated (domestic) draught beers, causing beer to go flat.

Flat beer is wasteful because you are putting extra (poor quality) beer in every glass.  An ideal 5/8" head is the equivalent of 4% of a pint, so by pouring flat beer your bar loses 4% of the beer revenue.

Air is one of beer's worst enemies; it begins to destroy the product immediately on contact.  The oxygen content of the air acts as a flavor contagion, contaminating the drink with the flavors that the air has been exposed to - every flavor in the room.  Additionally, air contributes to the growth of several organic contaminates, required more frequent line cleaning.

Serving your beer with air is the equivalent to pouring a pint, setting it down, and then drinking it the next day!

Frequently Asked Questions:

Why should I care about the gas I use for draught beer?

What is a Nitrogen Generator?

Why should I use a Nitrogen Generator?

What is a gas blender?

Why should I care about the gas I use for draught beer?

Gas - carbon dioxide and sometimes nitrogen - is a standard ingredient in beer and also need to push draught beer from the keg to the tap.  A correct gas blend and pressure must be maintained to avoid under or over carbonating the beer.  The result from having correct gas is great taste and beautiful appearance intended by the brewer.

What is a Nitrogen Generator?

Nitrogen generators separate nitrogen from the other components of air on site, eliminating the need for nitrogen cylinders.  

Tri-State Carbonation Service uses generators that generate highest quality nitrogen by utilizing the only dual bed PSA technology available on today's market.  It blends the correct ration of Nitrogen and CO2, to push the product from the keg to the faucet.  This precise mixture of beer-gas eliminate over foaming or under carbonation ensuring a quality product is consistently presented to the customer.

Why should I use a Nitrogen Generator?

Establishments that sell high volume of draught beer can benefit from the use of a Nitrogen Generator by producing nitrogen on site and eliminating the need for high-pressure nitrogen cylinders.  This reduces the stocking and handling of cylinders that can lead to property / business damage and possible injury to employees as a result of mishandling.

By producing nitrogen on site it also reduces the chances of running out of nitrogen gas and interrupting the pouring the beer.  When nitrogen runs out the proper gas blend is compromised, nitrogen can no longer be produced and the beer could be ruined.

What is a gas blender?

Depending on the style of beer and the nature of draught beer systems, different gas blends using nitrogen and / or carbon dioxide are required to preserve the level of beer carbonation as determined by the brewer.

Beers are made to brewer's specifications of precise amounts of dissolved carbon dioxide to meet a specific taste.  The goal of any draught beer system is to maintain the balance of dissolved carbon dioxide or carbonation from keg to faucet.


                            Home | Bulk CO2 | Mixed Gas System | PH Control | Contact Us | Referral

                                                         FREE NO OBLIGATION QUOTE                           
                              (845)794-6226 or 1-866-SODA-GAS