628 Series chn 628

Carbon/Hydrogen/Nitrogen Determinator

By incorporating state-of-the-art hardware and software technology with key improvements in overall instrument performance and reliability the 628 Series makes it possible to achieve fast results in organic matrices from food to fuels. For optimum versatility, this instrument is available in flexible configurations— nitrogen/protein, carbon/nitrogen, and carbon/hydrogen/nitrogen.



Maximize Throughput While Keeping Cost-Per-Analysis Low

  • Rapid analysis times of 3.5 to 4.5 minutes with extended reagent lifetimes ensure a low cost-per-analysis and increased instrument uptime for maximum throughput regardless of sample matrix or mass
  • Nitrogen/protein models feature a 2000 sample reduction reagent lifetime
  • Unique combustion gas handling and aliquot dosing system eliminating the need for chromatographic separation, trap and purge techniques, and other costly whole gas analyses
  • Simple, gravity-fed autoloader allows for unattended analysis with optional capacity for up to 120 samples, while increasing long-term reliability of loader

Additional Features and Benefits

  • Complies with AOAC, ASTM, ISO, AACC, AOCS and ASBC methods of analysis
  • Nitrogen and carbon/nitrogen configurations utilize a stainless-steel pre-chiller block and thermoelectric cooler eliminating the use of anhydrone or other chemical reagents for removal of moisture in the furnace combustion gases
  • Installation qualification & operation qualification available; IQ/OQ Brochure



  • Dual-stage furnace system operates at temperatures up to 1050°C using only pure oxygen to ensure the complete combustion of all organic samples, without requiring additional metal oxidizing reagents or other carrier gases
  • Quartz lance directs oxygen flow directly onto the sample, accelerating the combustion process and providing superior recovery
  • Large, porous crucible aids combustion process of macro samples and extends maintenance intervals to several hundred samples


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  • To enhance safety and convenience, reagent and reduction tubes are located on the front side of the instrument behind a cabinet door, along with specially designed tools to aid in performing maintenance tasks
  • Open access to ballast and pinch valve assembly areas with quick-release features and simple drop in replacement tubing kit simplify preventive maintenance routines resulting in long lasting system performance and reliability


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  • Simplified data handling, customizable data reporting/exporting, convenient on-board help manual and a number of user-defined settings make the software flexible and easy to operate
  • Designed for seamless interaction with any operator or customer environment, with virtually unlimited storage space and compatibility with various Laboratory Information Management Systems (LIMS)
  • Supports compliance to FDA regulations 21 CFR Part 11 for a closed analytical system


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  • CHN628 - carbon/hydrogen/nitrogen
  • CN628 - carbon/nitrogen
  • FP628 - nitrogen/protein


  • Sulfur add-on module provides independent sulfur determination on macro samples (350 mg) using high temperature combustion (1450oC) with analysis times less than 2 minutes
  • Oxygen add-on module for micro oxygen capabilities compatible with carbon/hydrogen/nitrogen instrument model
  • SmartLine® Remote Diagnostics
  • Consumables