How the OR-KNA 100 Automates Protein Analysis for High-Throughput Labs

OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer

The OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer is designed for labs that run routine protein and nitrogen determinations under strict quality protocols. It automates the entire workflow—acid and alkali addition, distillation, titration, and result calculation—while logging every step.

Repeatability below 0.5% RSD and recovery above 99.5% meet the precision demands of food safety and agricultural testing. The instrument uses a three-color photometric endpoint detection system, displaying real-time titration curves to give operators direct visibility into the distillation process.

Several design choices address common failure points. Intermittent alkali addition prevents violent neutralization that can cause ammonia loss. Uninterrupted steam generation and adjustable distillation power ensure reliable recovery even with low-concentration samples.

Built-in safety systems monitor distillation flask temperature, cooling water flow, and pressure. The instrument halts heating if water level drops or if the safety door is open, reducing the risk of accidents during unattended operation.

Data handling is a core feature. The unit stores up to 10,000 analysis records and can export results via USB or wireless transmission. Optional user access controls align with GMP 21 CFR Part 11 compliance, making the system suitable for regulated environments where audit trails are mandatory.

The instrument is constructed from ABS engineering plastics and uses corrosion-resistant internal tubing with a three-year warranty—practical choices for labs where sulfuric acid and alkaline reagents are in daily use.

For procurement managers, the balance of throughput, compliance features, and long service life positions the OR-KNA 100 as a competitive option in a market where Chinese-made analytical instruments are increasingly meeting international standards.

Why it matters:
The OR-KNA 100 removes operator variability from Kjeldahl analysis while ensuring data integrity. For labs scaling up food or feed testing, it reduces the cost of compliance and cuts turnaround time without sacrificing accuracy.

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