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Leco - Organic elemental analysis - Carbon/Nitrogen/Protein

Leco instruments produce fast, reliable results with a low cost-per-analysis. The TruMac N, FP628, FP528 and 928 Series delivers quick analysis for various applications. Read on to find the most suitable instrument for your needs.

Available models

The 928 Series allows you to easily handle the most demanding sample applications. Macro sample mass ability (up to 3 grams for Nitrogen/Protein model regardless of sample carbon content) with rapid cycle times and a resulting low cost-per-analysis make the 928 Series ideal for analysis of characteristically heterogeneous, difficult to prepare, or low analyte level samples.

  • Rapid cycle time of 5.3 minutes for the Nitrogen/Protein model
  • Large, open, and reusable ceramic sample boats facilitate the handling and combustion of macro samples (mass up to 3 grams)
  • Reagent free, high-efficiency furnace with intelligentcontrol optimizes furnace reliability by extending the heating element and ceramic lifetime

By incorporating state-of-the-art hardware and software technology with key improvements in overall instrument performance and reliability, the FP628 allows you to achieve rapid analysis times of 3.5 minutes for nitrogen/protein results in organic matrices such as foods, forages, fertilizers, and milled products regardless of sample mass.

Part of our popular 628 series, this instrument is also available in carbon/nitrogen and carbon/hydrogen/nitrogen configurations. An optional sulfur add-on module provides independent sulfur determination on macro samples (350 mg).


The FP528 is designed for smaller sample weights, delivering results within four minutes, and is controlled by an external PC using Windows®-based operating software.

This instrument complies with approved test methods AOAC 992.23AOAC 992.15AACC 46-30, and AOAC 993.13.

TruMac N

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.

  • Agriculture
  • Biopharmaceutical and Biotechnology
  • Chemical
  • Construction
  • Cosmetics & Personal Care
  • Education & Academics
  • Energy
  • Food & Beverage
  • Mining & Minerals
  • Oil & Gas
  • Pharmaceutical
LECO CorporationSince the introduction of the first rapid carbon determinator in 1936, industries around the world have trusted LECO Corporation to deliver technologically advanced products and solutions for organic and inorganic analysis. Today LECO is recognized globally as a leader in the development of high-quality analytical instrumentation, next generation mass spectrometers and chromatographs, metallography equipment, and consumables. 
[Leco, Organic, Nitrogen, Protein, Organic elemental analysis]