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TruMac® N

Nitrogen/Protein in Organic Samples

Easily handle characteristically heterogeneous, difficult to prepare, or low-level samples with the TruMac nitrogen determinator. Macro sample sizes (up to 3 grams) are quickly analyzed with a low cost-per-analysis.

A unique high temperature ceramic horizontal furnace, combined with LECO's carbon/nitrogen/sulfur determinator design, make the TruMac ideal for a variety of applications including soils, feeds, meats, starches, and slurries.

Part of our popular TruMac series, this instrument is also available in carbon/nitrogen and carbon/nitrogen/sulfur configurations.

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Maximize Throughput for Macro Samples While Keeping Cost-Per-Analysis Low

  • Rapid analysis of 5.0 minutes with extended reagent lifetimes including a 2000 sample copper reduction reagent lifetime ensure a low cost-per-analysis and increased instrument uptime for maximum throughput regardless of sample matrix or mass
  • Unique combustion gas handling and aliquot dosing system eliminating the need for chromatographic separation, trap and purge techniques, and other costly whole gas analyses
  • Autoloader allows for unattended analysis of 50 samples, full automation of analysis cycle simplifying workflow and increasing productivity

Improved Design and Accessibility for Maintenance

  • Eliminate the need for chemical anhydrone, TruMac N uses a thermoelectric cooler to remove moisture from combustion gas
  • Simplified preventive maintenance routine with Quick-release ballast assembly and exterior mounted pinch-valve assembly 
  • Complies with AOAC, AACC, AOCS, ISO, and ASBC methods of analysis


Unique Ceramic Horizontal Furnace

  • Pure oxygen environment with lance directing oxygen directly onto the sample ensures the complete oxidation of macro samples with maximum temperatures up to 1450oC
  • Robust design utilizes six heating elements for increased reliability and efficiency
  • Purge chamber eliminates atmosphere entrainment in samples


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  • Large, reusable sample boats facilitate the handling of macro samples
  • Open ceramic boats provide ample surface area for the efficient purge and combustion of macro samples
  • Sample ash retained in boat for post-analysis removal
  • Nickel liners and/or nickel boats available for the analysis of macro liquid samples in TruMac nitrogen configurations


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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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