MOCON MultiCheck 2 Headspace & MAP Gas Analyzer

Overview

The MOCON MultiCheck 2 is a high-throughput, integrated headspace and modified atmosphere packaging (MAP) gas analyzer engineered for precision measurement of O₂, CO₂, and N₂ concentrations in sealed food, pharmaceutical, and consumer product packages. Utilizing paramagnetic (O₂) and infrared (CO₂) detection principles—combined with thermal conductivity or pressure-based compensation for N₂ calculation—the system delivers repeatable, traceable gas composition analysis compliant with ASTM F2096 (bubble emission), ASTM F2338 (vacuum decay), and ISO 11607-2 requirements for package integrity validation. Designed specifically for high-volume production environments—including coffee roasting facilities where volatile organic compound (VOC) retention and oxidation-sensitive aroma profiles demand strict atmosphere control—the MultiCheck 2 operates on the fundamental principle of quantitative gas-phase extraction followed by real-time spectroscopic and physical property-based quantification.

Key Features

• Simultaneous four-channel testing capability: headspace gas analysis (O₂/CO₂/N₂), seal integrity leak detection (via vacuum decay or pressure decay), valve burst pressure testing, and valve release pressure verification—all executed in a single automated cycle
• 50% faster throughput versus predecessor models, enabled by parallel sensor architecture, optimized gas handling manifolds, and reduced purge-and-equilibration time
• Dedicated coffee-grade filtration system with VOC-resistant hydrophobic membranes and catalytic scrubbers to prevent sensor fouling from roasted bean volatiles and lipid aerosols
• Modular Valve Test Unit (VTU) with programmable ramp-rate pressurization, ±0.1 psi pressure resolution, and automatic pass/fail threshold logic per ISO 11607-2 Annex B
• Intuitive 7-inch capacitive touchscreen interface supporting multilingual UI (English, Spanish, German, French, Chinese), configurable user roles, and GLP-compliant audit trail logging
• Onboard storage for >100,000 test records with embedded timestamping, operator ID, environmental metadata (ambient T/RH), and digital signature support
• Front-panel USB ports for barcode scanner integration, external keyboard input, and firmware updates; dedicated RJ45 Ethernet port for OPC UA and Modbus TCP industrial protocol support

Sample Compatibility & Compliance

The MultiCheck 2 accommodates rigid, semi-rigid, and flexible packaging formats—including stand-up pouches, foil-laminated bags, aluminum cans, PET trays, and vacuum-sealed coffee valves—across volume ranges from 10 mL to 5 L. Its non-destructive sampling probe design minimizes package deformation during headspace aspiration, preserving sample integrity for downstream sensory or microbiological evaluation. The instrument meets IEC 61000-6-2/6-3 electromagnetic compatibility standards and carries CE marking under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. Data output conforms to FDA 21 CFR Part 11 requirements when paired with MOCON’s validated IQ/OQ/PQ documentation package and optional electronic signature module.

Software & Data Management

Equipped with MOCON’s proprietary AnalytiCAL™ 3.2 software suite, the MultiCheck 2 supports centralized data aggregation via secure HTTPS API endpoints or local network file sharing (SMB/CIFS). All test results are stored in encrypted SQLite databases with SHA-256 hashing, enabling full traceability from raw sensor voltage outputs to final %v/v gas concentration values. Batch reporting templates comply with ISO 9001:2015 clause 8.5.2 (identification and traceability) and include statistical process control (SPC) charts for O₂ drift monitoring over time. Optional cloud synchronization enables remote access to real-time KPI dashboards—including mean time between failures (MTBF), test pass rate trends, and valve performance degradation curves—for predictive maintenance planning.

Applications

• Coffee industry: Monitoring residual O₂ levels (<0.5%) post-roast packaging to prevent staling and preserve volatile thiols and furans critical to flavor profile
• Ready-to-eat meals: Verifying CO₂:N₂ ratios in MAP trays to inhibit Clostridium botulinum growth while maintaining texture
• Pharmaceutical blister packs: Confirming inert headspace conditions for moisture- and oxidation-sensitive biologics
• Pet food: Validating nitrogen flush efficacy in kibble bags to extend shelf life without preservatives
• Medical device pouches: Performing dual-mode leak + burst testing on Tyvek®-laminated sterile barrier systems

FAQ

What gas species can the MultiCheck 2 quantify simultaneously?

It measures O₂ (0.01–100% v/v, ±0.01% accuracy), CO₂ (0.1–100% v/v, ±0.1% accuracy), and calculates N₂ by difference with trace-level interference correction.
Is calibration required before each test run?

No—factory-calibrated sensors feature auto-zero referencing and periodic self-diagnostic routines; annual NIST-traceable recalibration is recommended per ISO/IEC 17025.
Can test methods be locked to prevent unauthorized parameter changes?

Yes—administrator-defined method templates (up to 999) enforce fixed dwell times, pressure ramps, and pass/fail thresholds across all operator accounts.
Does the system support integration into MES or SCADA platforms?

Yes—native Modbus TCP and OPC UA server functionality enables bidirectional communication with Siemens SIMATIC, Rockwell FactoryTalk, and Ignition SCADA systems.
How is particulate contamination managed during high-volume coffee testing?

Integrated self-cleaning reverse-purge cycles activate automatically after every 50 tests, and field-replaceable hydrophobic filters (part no. MC2-FIL-01) require replacement every 6 months under continuous operation.