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OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer
In high-throughput food and feed testing labs, the bottleneck is no longer the chemistry—it is the manual handling of liquid transfers and timing. The OR-KNA 100 addresses this directly.
The Kjeldahl method remains the global reference for protein and nitrogen determination. The OR-KNA 100 automates its core steps—acid, alkali, and dilution addition, followed by simultaneous distillation and titration—eliminating the need for constant operator oversight.
Its specifications reflect real operational demands. A recovery rate above 99.5% and repeatability below 0.5% RSD meet regulatory standards. The use of intermittent alkali addition and real-time colorimetry with RGB curves ensures the acid-base reaction remains controlled, avoiding ammonia loss—a common source of error in manual workflows.
Safety systems are not ancillary but integral. The instrument monitors distillation flask temperature, cooling water flow, and reagent levels, and halts operation if the flask runs dry. This reduces the risk of equipment damage and sample loss in unattended runs.
For labs managing large sample volumes or seeking compliance with data integrity regulations (e.g., 21 CFR Part 11), the OR-KNA 100 offers permission-based access and data upload via USB or wireless. This turns raw analysis results into auditable, traceable records.
The instrument is built with ABS engineering plastics and corrosion-resistant tubing—a design choice that balances longevity with the need to withstand aggressive reagents. The 3-year warranty on internal piping signals confidence in manufacturing durability.
For procurement managers in China’s food safety, agricultural research, and pharmaceutical testing sectors, this unit represents a standardised, low-risk investment. It removes human variability from a method that has been unchanged for over a century.
The value is not in novelty but in the reduction of friction—making a proven method faster, safer, and audit-ready.
Why it matters:
For labs running 50+ nitrogen tests daily, the OR-KNA 100 cuts per-sample handling time by automating liquid transfers and enabling unattended operation, while its data compliance features satisfy increasingly strict regulatory oversight.
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