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Cryogenic Dosing Technology

Liquid nitrogen dosing for beverage and food packaging

Steiner Ukraine is the exclusive representative of Vacuum Barrier Systems (VBS) in Ukraine, Kazakhstan, Uzbekistan, Azerbaijan, Armenia, Kyrgyzstan, Tajikistan, Moldova and Turkmenistan. NITRODOSE® and EasyDose™ dosers by Vacuum Barrier Corporation (USA), SEMIFLEX® and CobraFlex® cryogenic piping, Flavordose® flavour dosing systems. Line-specific selection, supply, spare parts and technical support.

Exclusive representative
Vacuum Barrier liquid nitrogen dosing head
ACCURACY UP TO ±1% SPEED UP TO 2000 cpm CIP · 3-D Technology
VBC · LN2 dosing head
±1%
Dose accuracy · Servodoser
2000/min
Line speed
9
Doser models
9
Countries served
What is an LN2 doser

What does a liquid nitrogen doser do on a filling line?

The doser injects a precise drop of liquid nitrogen into each container before or after filling, ahead of capping. The drop vaporises, displaces oxygen from the headspace and, once the container is sealed, creates internal pressure. This gives the producer three measurable results.

01 — PRESSURE

Rigid lightweight containers

Nitrogen overpressure keeps thin-wall PET bottles of still beverages in shape during storage and transport. This allows a lighter preform to be used.

02 — SHELF LIFE

Shelf life

Nitrogen vapour displaces oxygen from the package headspace. Product oxidation slows down; taste and colour are retained longer.

03 — EFFICIENCY

Nitrogen consumption

Dosing the liquid phase reduces nitrogen consumption compared with purging containers in gas tunnels.

LN2 boiling point: −196 °C Liquid-to-gas expansion: ≈ 1:694 EU food status: E941 US FDA: GRAS

Sources: Regulation (EC) No 1333/2008; 21 CFR 184.1540; VBS Europe.

Operating principle

How does nitrogen dosing work: 4 stages

01
Injection

The doser valve opens for milliseconds and delivers a metered dose of liquid nitrogen into the container neck. Minimum dose duration is 5 to 25 ms depending on the model.

02
Vaporisation

The drop turns into gas. Its volume increases roughly 700 times.

03
Inerting

The gas displaces air and oxygen from the headspace above the product.

04
Pressure

After capping, the remaining nitrogen creates overpressure and makes the container rigid.

Products

Three equipment lines

Liquid nitrogen dosing, LN2 supply through vacuum-jacketed piping, and flavour dosing into the filling line.

NITRODOSE liquid nitrogen doser by Vacuum Barrier Corporation
Dosing

LN2 dosers

  • NITRODOSE® G3, G3 Pro, G3 Servodoser®
  • EasyDose™ G3 Lite / G3 / G3 Plus, MiniDose G3
  • Linerter III, HS Aseptic
  • Line speeds up to 2000 cpm
  • Accuracy up to ±1% of dose weight (Servodoser)
Details
SEMIFLEX vacuum-jacketed pipe delivering liquid nitrogen from a tank
Piping

SEMIFLEX · CobraFlex

  • SEMIFLEX® — stainless steel vacuum-jacketed pipe
  • CobraFlex® — flexible cryogenic hose
  • Phase separators with 2 / 4 / 8 outlets
  • NITROMATIC — automatic dewar filling
  • Sealed or dynamic vacuum
Details
Flavordose dosing flavour into a PET bottle on a filling line
Flavouring

Flavordose®

  • Dosing of flavours and additives into the container
  • Up to 90,000 cph (1,500 cpm)
  • Dose standard deviation below 1%
  • Flavour changeover within minutes
  • CE, ATEX ready · Dose-Tec, VBS Group
Details
System selection

Liquid nitrogen doser model range

The model is selected by line speed, container headspace and required accuracy.

SystemLine speedMin. dose durationAccuracy (dose weight)Purpose
MiniDose G3up to 200 cpm25 ms±5%Small lines, lab testing
EasyDose™ G3 Liteup to 450 cpm25 ms±3%Simple operation, CIP option
EasyDose™ G3up to 450 cpm25 ms±3%CIP and 3-D Technology options
EasyDose™ G3 Plusup to 2000 cpm6 ms±3%High-speed lines
NITRODOSE® G3450 cpm25 ms±3%Self-monitoring, alarm outputs, beacon
NITRODOSE® G3 Pro2000 cpm6 ms±3%Self-monitoring at high speed
NITRODOSE® G3 Servodoser®2000 cpm5 ms±1%Adjustable flow without nozzle change
Linerter IIIup to 500 cpm12 ms±3%Large containers, moderate pressure
HS Asepticup to 900 cpm12 ms±3%Aseptic filling, automatic CIP

Manufacturer data: Vacuum Barrier Corporation, VBS Europe. cpm — containers per minute.

Select a model for my line How to choose a model

Video

Where liquid nitrogen is used

Overview of LN2 dosing and supply applications by VBS Europe.

Applications

Which products use LN2 dosing?

Containers: PET, glass, aluminium cans, pouches.

Water, juices, teaPressurisation of lightweight containers, inerting, hot fill
Beer, wine, coffeeOxygen reduction, nitrogenation
Dairy, snacksInerting, shelf life
Edible oils, pouchesContainer rigidity, lower residual O₂
Biotech and laboratoriesLN2 supply through piping to use points
Semiconductors / MBESingle-phase LN2 circulation

All applications

VBS references

Which producers use VBS dosers?

Vacuum Barrier liquid nitrogen dosers are installed on lines of beverage and food producers including:

Coca-ColaPepsiDanoneEckes-GraniniObolonKorolivskyi Smak

List based on VBS materials. Trademarks belong to their respective owners.

Why Steiner Ukraine

Supply, selection and service in the region

Selection, supply, original spare parts and online engineering consultations.

Exclusive VBS representative

Official supply of VBS equipment to Ukraine, Kazakhstan, Uzbekistan, Azerbaijan, Armenia, Kyrgyzstan, Tajikistan, Moldova and Turkmenistan.

Line-specific selection

Model and configuration are calculated from product, container, line speed and nitrogen source.

Spare parts and consultations

Original VBS and Dose-Tec spare parts by model and serial number. Online engineering consultations on operation and faults.

Work at your plant

Line trials, commissioning and installation supervision — individually, on request. Scope and terms are agreed per project.

Service and spare parts

Service for nitrogen dosers and Flavordose

Spare parts by model and serial number, online operating consultations. Work at the plant — individually, on request.

Region

Which countries does Steiner Ukraine serve?

Supply, equipment selection, spare parts and technical support for VBS systems:

Ukraine — office in KyivKazakhstanUzbekistanAzerbaijanArmeniaKyrgyzstanTajikistanMoldovaTurkmenistan
Questions and answers

Frequently asked questions about liquid nitrogen dosing

What is a liquid nitrogen doser?

A liquid nitrogen doser is a device on a filling line that injects a precise dose of liquid nitrogen (LN2) into each container before capping. The nitrogen vaporises, displaces oxygen from the headspace and creates overpressure in the sealed container. This extends product shelf life and makes lightweight PET containers rigid.

Is liquid nitrogen safe for food products?

Yes. Nitrogen is chemically inert, colourless, odourless and tasteless and does not change the product composition. In the EU it is approved as packaging gas and propellant E941 (Regulation (EC) No 1333/2008); in the USA the FDA classifies nitrogen as GRAS (21 CFR 184.1540). The filling area requires ventilation and room oxygen monitoring.

Which containers can be dosed with nitrogen?

PET bottles, glass containers, aluminium cans and pouches — for cold and hot filling. For containers with small headspace, such as lightweight bottles and hot-fill products, the 3-D Technology option is used.

Which doser does my line need?

The model depends on line speed and required accuracy. Up to 200 cpm — MiniDose G3; up to 450 cpm — EasyDose G3 Lite, EasyDose G3 or NITRODOSE G3; up to 2000 cpm — EasyDose G3 Plus, NITRODOSE G3 Pro or NITRODOSE G3 Servodoser (±1% of dose weight); aseptic filling — HS Aseptic; large containers — Linerter III. The final choice is made by an engineer based on your line data.

How is nitrogen supplied to the doser?

From a portable dewar, an outdoor cryogenic bulk tank or an existing piping system. For supply from a tank, SEMIFLEX vacuum-jacketed piping and CobraFlex flexible hoses are used together with phase separators.

What is the payback period of a liquid nitrogen doser?

According to VBS, the investment in a doser typically pays back within the first year of operation through lighter preforms and fewer rejects and returns. The actual period depends on line output, product, container and raw material prices and is calculated for each plant.

Can a doser be tested before purchase?

Trials on the customer's line are possible individually, on request. Terms are agreed per project.

Do you supply spare parts and provide service?

Yes. Steiner Ukraine supplies original spare parts for VBS dosers and Flavordose systems and provides online consultations on operation and troubleshooting. Work at the plant — commissioning, installation supervision, trials — is carried out individually, on request. Details are on the Service and spare parts page.

Discuss your project

Request a system selection

A Steiner Ukraine engineer will clarify your line parameters and prepare a quotation.

  • Free consultation with a technical specialist
  • Model selection for your product, container and line speed
  • Payback calculation for your plant
  • Work at the plant — individually, on request

Request a consultation

We will reply to your request.