Automating protein analysis

OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer

Kjeldahl nitrogen determination is the standard method for protein analysis in food, feed, and fertilizer testing. The OR-KNA 100 automates the entire process—acid and alkali addition, distillation, titration, calculation—removing manual steps that introduce variability.

Its technical specs reveal a lab instrument engineered for consistency. Repeatability below 0.5% and recovery over 99.5% meet rigorous analytical requirements. Simultaneous distillation and titration reduces runtime to as little as three minutes per sample while minimizing ammonia loss—a common source of error in older systems.

Safety features are equally purposeful. Real-time monitoring of distillation flask temperature, cooling water flow, and pressure prevents equipment damage and sample loss. Automatic shutoff on dry boil and door sensors protect operators in high-throughput environments where attention is divided.

Built-in memory for 10,000 records with optional wireless data upload and user permission controls signals a shift toward regulatory compliance—particularly relevant for industries bound by GMP 21 CFR Part 11. The instrument is designed not just to analyze, but to audit.

Constructed from ABS engineering plastics with corrosion-resistant internal piping and a three-year warranty, the unit points to a maturing domestic supply chain for lab equipment in China. It competes on durability and automation, not just price.

For quality control labs running routine nitrogen assays, the OR-KNA 100 eliminates operator-dependent variability and strengthens data integrity. The machine does the chemistry; the lab does the review.

Why it matters:
In food safety and agricultural testing, reproducibility is non-negotiable. The OR-KNA 100 turns a manual, error-prone standard into a closed-loop system with full traceability.

View Product →