Reducing Waste & Cost One Drop at a Time

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.

 

Adding Value One Drop at a Time

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.

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LN2 Dosing - Preservation

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

Doser Product Range

Scroll through the tabs to learn more about Chart's range of nitrogen dosers and associated controllers and access the technical specifications.

CryoDoser FleX

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

  • Compact Size – enables installation in limited spaces
  • Discrete Dosing
  • SoftDose™ Compatible – Chart's proven technology for hot fill, powder and granular applications
  • Dynamic Dose – Up to 16 containers each with different dose duration
  • Reset Timer - Reset each series back to one in case of line stoppage
  • 4 year vacuum warranty and 1 year controller warranty

CryoDoser FleX liquid nitrogen doser

Product Specifications

UltraDoser

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

  • Compact Size – enables installation in limited spaces
  • Precise Dosing – delivers consistent, accurate dosing
  • Discrete Dosing – up to 2000 containers per minute
  • Discrete or Continuous Dosing – change over defined by user
  • SoftDose™ Compatible – Chart’s proven technology for hot fill, powder and granular applications
  • RemoteDose™ Capable* – monitor and troubleshoot the system remotely thereby minimizing or eliminating system downtime
  • MicroDose™ Capable – designed specifically for tight pressure specifications
  • IntelliDose™ Capable – automatic dose adjustments at any line speed between low/high points as defined by user
  • 2 year warranty against manufacturing defects from time of shipment

Ultradoser liquid nitrogen dosing system

Product Specifications

Inerter

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

  • Compact Size – enables installation in limited spaces
  • Precise Dosing – delivers consistent, accurate dosing
  • Discrete Dosing – up to 2000 containers per minute
  • Discrete or Continuous Dosing – change over defined by user
  • Vacuum Insulated Technology - most efficient use of liquid nitrogen
  • RemoteDose™ Capable* – monitor and troubleshoot the system remotely thereby minimizing or eliminating system downtime
  • IntelliDose™ Capable – automatic dose adjustments at any line speed between low/high points as defined by user
  • 2 year warranty against manufacturing defects from time of shipment

Inerter liquid nitrogen dosing system

Product 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

  • Compact Size – enables installation in limited spaces
  • Discrete Dosing
  • SoftDose™ Compatible – Chart's proven technology for hot fill, powder and granular applications
  • Dynamic Dose – Up to 16 containers each with different dose duration
  • Reset Timer - Reset each series back to one in case of line stoppage
  • 4 year vacuum warranty and 1 year controller warranty

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

  • Compact Size – enables installation in limited spaces
  • Precise Dosing – delivers consistent, accurate dosing
  • Discrete Dosing – up to 2000 containers per minute
  • Discrete or Continuous Dosing – change over defined by user
  • SoftDose™ Compatible – Chart’s proven technology for hot fill, powder and granular applications
  • RemoteDose™ Capable* – monitor and troubleshoot the system remotely thereby minimizing or eliminating system downtime
  • MicroDose™ Capable – designed specifically for tight pressure specifications
  • IntelliDose™ Capable – automatic dose adjustments at any line speed between low/high points as defined by user
  • 2 year warranty against manufacturing defects from time of shipment

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

  • Compact Size – enables installation in limited spaces
  • Precise Dosing – delivers consistent, accurate dosing
  • Discrete Dosing – up to 2000 containers per minute
  • Discrete or Continuous Dosing – change over defined by user
  • Vacuum Insulated Technology - most efficient use of liquid nitrogen
  • RemoteDose™ Capable* – monitor and troubleshoot the system remotely thereby minimizing or eliminating system downtime
  • IntelliDose™ Capable – automatic dose adjustments at any line speed between low/high points as defined by user
  • 2 year warranty against manufacturing defects from time of shipment
 

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.

Producing and Selling Nitro Canned Beer

Discover How to Can Nitro Beers

nitrogen dosing

 
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Full Equipment Solution

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. 

  1. Storage: complete range of LN2 liquid cylinders, MicroBulk systems and bulk tanks.
  2. Withdrawal: a vacuum insulated valve has the benefit of extremely low heat leak for minimum gas boil-off and eliminates unsafe ice build-up.
  3. Vacuum Insulated Pipe: the foundation for heat loss efficiency and long-term integrity.
  4. Phase Separator: provides extremely high-quality, low pressure LN2 on demand resulting in a continuous supply of unsaturated LN2.

 

Additional Resources

 

Craft Custom Max

New controller for the CryoDoser FleX that further increases production, enhances efficiency, supports scalable business growth, reduces waste and lowers costs.

Operating Manuals

Chart maintains a digital library of current and archived operating manuals. Access the manuals for product details, safe operation, installation, preventative maintenance, troubleshooting and more.

Beverage Systems

Chart liquid gas storage systems ensure safety, eliminate waste and guarantee taste quality and regulatory compliance across the beverage sector.

Cryogenic Data Book

Chart's Cryogenic Data Book is the go to guide for all major liquid gas properties and the specialty equipment used to safely, efficiently and economically store, transport and dispense them.

Chart University

Chart University is a series of technical training events designed by our experts and combine classroom, practical and site learning. The aim is for participants to graduate with a better understanding of handling and operating cryogenic gases and equipment with maximum efficiency and safety.

Chart Parts

ChartParts.com is the e-commerce platform to order authorized OEM spare parts for Chart equipment, training events and more.

The Perfect Pour

Chart discusses how a hybrid approach between nitrogen and carbon dioxide has seen breweries drastically reduce costs and improve process efficiencies. First published in Brewer's Journal, Winter 2024/5

Understanding Cryogenics

Cryogenic technology is used to liquefy gases for their safe, efficient and economic transport. Liquid gases are used in hundreds of applications across industry, science, leisure, food and beverage, medical, energy, aerospace and more. This video is designed to help you understand the key concepts that make it possible.

 

Technical Library

View and download sales literature, technical manuals and more.

Bulk CO2 & N2 Generator- from bars to restaurants

Benefits of Chart beverage systems to provide high quality CO2 gas and on-site blended beer gas.

Bulk CO2 and LN2- from pubs to breweries

Benefits of Chart beverage systems as it provides the perfect pour.

Liquid Nitrogen Dosing (2025 edition)

Chart dosing systems are primarily used to pressurize and/or inert (N2 flush) products and its packaging. As new packaging technologies and products evolve, so has a demand for refined dosing results. Chart has met these challenges with innovation, key partnerships and detailed application analysis.

Trends in food processing equipment in the US

Why Chart

Ten reasons why Chart is the best value in cryogenic equipment.

Application Focus - General Nitrogen Dosing Capabilities

Application Focus - Nitro & Cold Brew Coffee

Application Focus - Nitrogen Dosing for Beer

Application Focus - Nitrogen Dosing for Wine

Application Focus - PET Container Reduction & Enhancement

Creating a Sustainable Brewery

A hybrid approach between nitrogen and carbon dioxide has seen breweries drastically reduce costs and improve process efficiencies. In this article, first published in Brewer's Journal, Chart outlines a number of solutions.

Data Book for Cryogenic Gases and Equipment

Liquid Nitrogen Dosing

System Solutions for LN2 Service.

Dosers manuals on ChartParts.com

Library of product manuals for Dosers.

Adjustable Pressure Phase Separator (APPS) 160

The APPS 160 unit was developed to be used alongside LN2 high pressure bulk tanks. Designed to lower the saturation point of the liquid nitrogen as well as lower temperature. Manufactured in US.

Nitrogen Dosing - Craft Custom Max

The new CryoDoser FleX™ Craft Custom Max further increases production, enhances efficiency, supports scalable business growth, reduces waste and lowers costs.

Nitrogen Dosing - CryoDoser FleX

Incorporating the Pack Premier and Craft Custom models, CryoDoser FleX® is the first doser with the ability to serve every dosing application within one unit.

Nitrogen Dosing - Inerter™

The Inerter™ is a large volume liquid nitrogen (LN2 ) dosing system for full container and high-volume headspace inerting applications.

Nitrogen Dosing - UltraDoser®

UltraDoser® is the multi-purpose liquid nitrogen (LN2 ) dosing system utilizing advanced cryogenic technology and PLC programming.

Design Change Notifications

Sales & Support

Click the 'Contact Us' button, select 'Email An Inquiry' and complete the short form.

Americas - Customer Service  +1 833 205 2226

Americas - Technical Service  +1 800 253 1769

Europe & Middle East - Sales & Service  +44 (0)1386 556622

Interesting Facts

3100000

of clean drinking water

Water + Response Program

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.