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CO₂ Analysis in Modified Atmosphere Packaging

CO₂ Analysis in Modified Atmosphere Packaging

Verifying CO2 Concentration in MAP Gas Mixtures for Food Preservation — CO2-525X

Modified atmosphere packaging gas mixtures typically combine CO2 with nitrogen and sometimes oxygen in specific ratios tailored to the product, with CO2 playing a key role in inhibiting microbial growth and extending shelf life. Verifying that the CO2 concentration in the mixing system and finished package matches the target formulation is essential to achieving the intended preservation benefits.

The CO2-525X gives packagers continuous CO2 verification at gas mixing and packaging checkpoints, confirming MAP gas formulations meet their target specification.

  • MAP Gas Mix Verification
  • Food Preservation
  • Packaging Line QC
  • Continuous Online Monitoring

Why CO2 Gas Mix Verification Matters

An incorrect CO2 concentration in a MAP gas mixture, whether too high or too low, can compromise the intended preservation effect, affecting product appearance, texture, or shelf life. Continuous CO2 monitoring at the gas mixing system and packaging line confirms the formulation matches specification before packages are sealed and shipped.

Where It's Used

  • Gas mixing system verification confirming CO2 ratio before gas reaches the packaging line
  • Packaging line headspace checks verifying CO2 concentration in sealed packages
  • New product formulation validation confirming target gas mix during product development
  • Routine packaging line quality audits periodic verification across shifts and products

Recommended Analyzer

CO2-525X Continuous CO2 Process Analyzer

The CO2-525X delivers stable, continuous CO2 measurement suited to verifying gas mixture composition at MAP gas mixing systems and packaging lines.

Configured for both continuous line monitoring and headspace spot-checks, the CO2-525X supports comprehensive CO2 verification across MAP packaging quality programs.

  • Continuous or Spot-Check Capable
  • Gas Mix Verification
  • 4-20 mA Output
  • Headspace Sampling Compatible

Key Specifications

  • Range: percent-level CO2, covering typical MAP gas mixture concentrations
  • Response time: fast enough to support packaging line spot-check throughput
  • Sensor technology: stable process sensor suited to continuous or intermittent duty
  • Output: 4-20 mA for integration with gas mixing system controls and quality data systems
  • Enclosure: suitable for food and beverage production environment installation

Frequently Asked Questions

Trace oxygen measurement provides a direct indication of oxygen contamination or crossover into the hydrogen stream. Trending the oxygen concentration can help operators identify changes in electrolyser or purification system performance.

A common measurement point is the hydrogen product stream downstream of the electrolyser stack. Additional measurement points may be used before or after drying and purification equipment depending on the process design and monitoring objectives.

Alarm and control limits should be determined based on the electrolyser manufacturer’s specifications, process conditions, applicable standards, and the facility’s safety requirements rather than using a universal oxygen alarm value.

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