The OR-KNA 100 nitrogen analyzer reveals the push for lab automation beyond simple measurement.

OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer

The Kjeldahl method for determining nitrogen—and thus protein—content is a foundational but laborious ritual in food, feed, and agricultural labs. Its accuracy hinges on a precise sequence of digestion, distillation, and titration, each step vulnerable to human error or timing inconsistency.

The OR-KNA 100 automates that entire workflow. It adds reagents, distills, and titrates simultaneously, completing a sample in three to eight minutes with a claimed recovery rate over 99.5%. The system’s design focuses on control: intermittent alkali addition prevents violent reactions, and constant steam flow aims for complete ammonia recovery, even for low-concentration samples.

Its operational logic is data integrity. A built-in database stores testing plans, while every action—from acid volume to final calculation—is automatically recorded. Optional features allow data upload and user permission controls, explicitly nodding to traceability regulations like FDA’s 21 CFR Part 11.

The safety and monitoring features read like a risk mitigation checklist. It watches flask temperature, cooling water flow, and reagent levels, stopping the process if anything is amiss. This transforms the apparatus from a simple tool into a managed system, reducing the need for constant technician vigilance.

Such instruments are commodities of industrial-scale quality assurance. They serve labs where throughput and audit trails are as critical as precision. The use of ABS engineering plastics and corrosion-resistant piping with a three-year warranty speaks to a manufacturing focus on durability for continuous operation, not just laboratory delicacy.

China’s role here is as a volume manufacturer of the industrial scientific apparatus that global supply chains rely on. It is not inventing the Kjeldahl method but is refining its execution into a reliable, connected, and supportable black box for global commodity markets.

The product’s real innovation is making a complex, wet-chemical procedure as routine and traceable as running a barcode scanner.

Why it matters:
For procurement managers, it represents a shift from buying an instrument to buying a certified workflow. The emphasis on data export and regulatory compliance makes it a tool for labs under pressure to demonstrate both accuracy and defensible process control to auditors.

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