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Kjeldahl Tablets

Five white bottles of Kjeldahl tablets in different pack sizes, displayed side by side with product labels and hazard information visible on the containers.

Across food, feed, agricultural, environmental, and pharmaceutical laboratories, nitrogen determination remains a widely used analytical technique for testing, quality control, and research. Among the methods used for nitrogen determination, the Kjeldahl method continues to be a widely adopted approach due to its broad applicability across diverse sample types. As the foundation of the Kjeldahl workflow, the digestion step plays a critical role in preparing samples for accurate nitrogen measurement across a wide range of analytical applications.

We offer a range of Kjeldahl tablets formulated with carefully controlled catalyst and sulfate salt compositions to support diverse digestion requirements across analytical laboratories. Each tablet delivers a precisely defined catalyst formulation designed to promote uniform heat distribution and accelerated digestion. The convenient tablet format simplifies reagent handling and preparation in both routine and high-throughput laboratory environments.

Products

The portfolio includes a range of Kjeldahl tablet formulations, from traditional copper-based catalysts to heavy metal-free alternatives, enabling selection of the most suitable option for specific application and regulatory requirements. Available in 3.5 g and 5 g tablet sizes, the tablets are supplied in PE bottles with integrated lids for convenient handling, secure storage, and consistent dosing. Manufactured under stringent quality controls, the tablets deliver reliable lot-to-lot consistency to support routine and high-throughput laboratory workflows.

Missouri Method Tablets

Missouri method tablets contain a combination of potassium sulfate (K₂SO₄) and copper sulfate (CuSO₄), a widely used formulation for Kjeldahl digestion. Suitable for a broad range of organic materials, including plant and animal tissues, they are particularly well suited for samples with high protein content and support efficient, complete digestion across routine analytical workflows.

Wieninger Method Tablets

Developed for the digestion of food and feed samples, Wieninger method tablets are based on a formulation of potassium sulfate (K₂SO₄), copper sulfate (CuSO₄), and proprietary performance-enhancing additives. Particularly well suited for matrices with high fat or carbohydrate content, they support faster digestion and high nitrogen recovery, including in challenging sample types that can be difficult to digest using standard formulations.

Heavy Metal-Free Tablets

Formulated without selenium or mercury, heavy metal-free tablets provide an alternative catalyst system for laboratories seeking to reduce the use of hazardous substances in Kjeldahl digestion workflows. Suitable for a broad range of organic sample types, they support effective digestion while helping laboratories address environmental, safety, and regulatory requirements.

 

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