Chart Industries has been perfecting liquid nitrogen dosing for preservation, pressurization, and freezing in a wide variety of packaging applications for over 30 years.
Being the first to market with new technologies and the only global turnkey LN2 system supplier, our premier nitrogen dosing systems have become the standard throughout the world.
Based on the physical characteristic that one part of liquid nitrogen warms and expands into 700 parts of gaseous nitrogen at ambient temperature, Chart’s engineers have designed automated dosing equipment and complete systems that precisely dispense a measured dose of LN2 into each container prior to sealing. The trapped liquid nitrogen vaporizes, creating pressure, and adding rigidity to the container – allowing for a thinner container wall. For preservation and modified atmosphere packaging (MAP) applications, the rapidly expanding gas is allowed to escape before the product is sealed, flushing out oxygen, and extending product shelf life.
Choose Your Doser
Our liquid nitrogen dosing equipment is easy to operate and can be integrated into new or existing packaging lines.
CryoDoser®LN2 Dosing System
Chart’s premier high speed dosing system utilizing advanced cryogenic technology and PLC programming. Three sensors detecting line speed, timing and bottle presence allow the system to dispense a precise dose of LN2 into every container every time.
UltraDoser® LN2 Dosing System
The UltraDoser system is the ideal general purpose liquid nitrogen dosing system with speed compensated controls. 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.
Inerter™ LN2 Dosing System
Our Inerter system is a high volume LN2 dosing system for full container and headspace inerting applications designed to meet ultra-low O2 specifications in the food and beverage industry. When compared to traditional gaseous nitrogen flushing applications, the Inerter system provides better consistency and reduces LN2 consumption and cost.