BEHR behrotest® Standard Kjeldahl Digestion Vessel

The BEHR behrotest® Kjeldahl Digestion Vessels combine precision manufacturing, chemical resistance, and universal compatibility to support accurate and efficient protein, nitrogen, and ammonia analysis using the Kjeldahl method.

Constructed from high-quality borosilicate glass, these vessels ensure uniform heat transfer and long-term resistance to corrosive reagents such as sulfuric acid and catalysts.

The SR and KJ Series cover a wide volume range — from 100 mL micro-Kjeldahl to 750 mL large-volume digestion — making them ideal for both routine and specialized analytical applications.

Compatible with BEHR K-Series digestion blocks, InKjel systems, and most standard Kjeldahl units, these vessels ensure seamless integration across laboratories worldwide.

Key Features

1. High-Quality Borosilicate Glass Construction

• Fabricated from acid-resistant borosilicate glass for maximum chemical durability.
• Ensures uniform heat distribution during digestion for reproducible analytical results.
• Resistant to the harsh chemical environment of sulfuric acid-based Kjeldahl digestion.

2. Broad Volume Range

• Available in five vessel capacities to accommodate varying sample sizes and analytical needs:
  • SR 4 – 100 mL (micro-Kjeldahl digestion)
  • SR 3i – 250 mL (standard Kjeldahl digestion)
  • SR 5 – 400 mL (large-volume digestion for K 8 B)
  • KJ 500 – 500 mL (round-bottom digestion vessel for macro samples)
  • KJ 750 – 750 mL (for BEHR InKjel systems, macro-digestion applications)

3. Standardized Geometry and Universal Compatibility

• Designed to fit BEHR behrotest® K-Series digestion systems (K 8, K 12, K 20) and InKjel analyzers.
• Standard neck dimensions ensure compatibility with most manufacturers’ digestion and distillation systems.
• Suitable for both manual and automated Kjeldahl setups.

4. Reliable and Reproducible Results

• Provides efficient boiling and even heat transfer for optimal digestion.
• Compatible with BEHR catalyst tablets (KT series), anti-foam tablets (AFS), and boiling stones (SIST).
• Ensures complete and consistent sample decomposition across a wide range of materials.

5. Durable and Easy to Maintain

• Reusable, heavy-wall design minimizes breakage and extends lifespan.
• Round-bottom geometry facilitates easy cleaning and uniform heating.
• Suitable for laboratories performing high-throughput Kjeldahl analysis.

Technical Specifications

Applications

• Food and Feed Laboratories: Determination of protein and nitrogen in dairy, cereals, meat, and animal feed.
• Agricultural Testing: Nitrogen and phosphorus digestion in soil, fertilizers, and compost.
• Environmental Analysis: Digestion of sludge, wastewater, ash, and solid waste.
• Industrial Chemistry: Nitrogen analysis in polymers, petrochemical, and pharmaceutical samples.
• Academic and Research Laboratories: Training and method development in Kjeldahl and macro-Kjeldahl analysis.

Unique Advantages

• Universal compatibility with BEHR and other manufacturers’ digestion/distillation systems.
• Chemical and thermal resistance for reliable operation in aggressive acid environments.
• Round-bottom design guarantees efficient heating and minimizes sample loss.
• Wide capacity range (100–750 mL) for micro, standard, and macro applications.
• Reusable and easy-to-clean design reduces long-term laboratory costs.

The BEHR behrotest® SR and KJ Series Kjeldahl Digestion Vessels deliver reliable, durable, and precise performance for nitrogen and protein analysis across a wide range of sample types and laboratory environments.

From micro-scale determinations to large-volume macro digestions, these vessels ensure consistent heating, chemical stability, and long service life — making them indispensable glassware for Kjeldahl-based digestion and distillation workflows in analytical, research, and industrial laboratories.