One part of liquid nitrogen (LN2) warms and expands into 700 parts of gaseous nitrogen at ambient temperature. Chart's automated dosers dispense a precisely measured dose of LN2 into each container prior to sealing. The trapped LN2 vaporizes, creating pressure, and adding rigidity to the container – allowing for a thinner container wall.
Liquid nitrogen is supplied to the doser by a vacuum insulated hose and flows into the dosing head. A sensor detects the speed of the line (encoder compatible for higher speeds), and a second sensor detects the presence of a container. When a container is detected, the dosing head actuated valve opens and dispenses the exact amount of pure liquid nitrogen. A PLC (Programmable Logic Controller) is the brains behind integrating the sensors, controls and human interface via a touchscreen display.
Preservation - Pressurization - Freezing; learn more about the 3 key features Chart nitrogen dosing systems bring to your production line and the attendant benefits in cost, efficiency and sustainability.
Key Benefits: oxygen reduction, extended shelf life, efficient nitrogen consumption, stabilization of organic products
Typical Applications: automobile oil, beer, condiments, wine
In Operation: documented studies show a 26% increase in shelf life and 90 to 95% reduction in headspace oxygen compared to traditional gaseous nitrogen purging
Key Benefits: lighter weight packaging, increased packaging rigidity, glass to plastic transition, eliminates package paneling, ease of labeling, oxygen reduction
Typical Applications: bottled water, energy shots, flax seed oil, juices (hot and ambient fill), teas, vinegar
In Operation: documented 9 gram reduction in PET bottle weight equated to an annual cost saving >$2.6 million
Key Benefits: maintains product integrity, aids in packaging and labeling, enables new products to be brought to market, enhances flavor and texture
Typical Applications: dipped ice cream cones and iCream Café
In Operation: liquid nitrogen flash freezing of ice cream cones provides stability and support through the packaging process resulting in improved overall aesthetics
Key Benefits: extended shelf life, oxygen reduction, reduced nitrogen consumption, stabilization of organic products
Typical Applications: baby formulas, coffee, nuts, trail mix, botanicals
In Operation: 46% reduction in nitrogen consumption using a Chart doser in lieu of traditional nitrogen gas purging
Scroll through the tabs to learn more about Chart's range of nitrogen dosers and associated controllers and access the technical specifications.
CryoDoser FleX® Liquid Nitrogen Dosing System is the first doser with the ability to serve every dosing application within one unit, from the slowest production lines to the fastest. The most efficient dosing system to date, the CryoDoser FleX system is the only liquid nitrogen doser you need. With 3 available controllers; Pack Premier, Craft Custom and new Craft Custom Max, and more standard functions than any other doser, CryoDoser FleX has revolutionized the market.
Features

The UltraDoser® is the multi-purpose liquid nitrogen dosing system utilizing advanced cryogenic technology and PLC programming. Chart engineers designed an ultra-efficient system for low to medium production line speeds to dispense a precise dose of LN2 into every container every time. The LN2 gasifies and is either trapped in the container to add rigidity or escapes with oxygen to inert the headspace.
Features

The Inerter™ is a large volume liquid nitrogen dosing system for full container and high-volume headspace inerting applications.
When compared to traditional gaseous nitrogen flushing applications, the Inerter provides better consistency and reduces nitrogen consumption and cost.
Features

CryoDoser FleX® Liquid Nitrogen Dosing System is the first doser with the ability to serve every dosing application within one unit, from the slowest production lines to the fastest. The most efficient dosing system to date, the CryoDoser FleX system is the only liquid nitrogen doser you need. With 3 available controllers; Pack Premier, Craft Custom and new Craft Custom Max, and more standard functions than any other doser, CryoDoser FleX has revolutionized the market.
Features
The UltraDoser® is the multi-purpose liquid nitrogen dosing system utilizing advanced cryogenic technology and PLC programming. Chart engineers designed an ultra-efficient system for low to medium production line speeds to dispense a precise dose of LN2 into every container every time. The LN2 gasifies and is either trapped in the container to add rigidity or escapes with oxygen to inert the headspace.
Features
The Inerter™ is a large volume liquid nitrogen dosing system for full container and high-volume headspace inerting applications.
When compared to traditional gaseous nitrogen flushing applications, the Inerter provides better consistency and reduces nitrogen consumption and cost.
Features
Familiar with the upsurge in craft beers and the nitro coffee phenomenon? Chart nitrogen dosing facilitates both.
Keen to learn more? We provide learning opportunities through our informational webinars.

From initial design to a complete after-sales package, we work closely with our customers to ensure that the complete system is engineered and built in accordance with their requirements and always operating at peak efficiency.
Chart Parts provides replacement components for products manufactured by Chart Industries and other manufacturers of cryogenic, CO2 beverage, LN2 dosing, water treatment, and LNG equipment. Since 2002, Chart Parts has been providing high-quality parts with customer & technical services support – so you get the right replacement parts at the right time to keep your equipment operating at peak efficiency. We leverage our OEM-approved suppliers, assuring you genuine parts at a competitive price.
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Americas - Customer Service +1 833 205 2226
Americas - Technical Service +1 800 253 1769
Europe & Middle East - Sales & Service +44 (0)1386 556622
3100000
of clean drinking water
With the donation of Chart dosing equipment Can’d Aid has provided >3.1 million cans of clean drinking water throughout the U.S., including Puerto Rico and Navajo Nation, in response to natural and human-made disasters. Can’d Aid volunteers distribute water providing access and opportunities to underserved youth, and protecting and restoring the environment.