Hanon K1160 Automated Kjeldahl Nitrogen Analyzer with K1124 24-Position Autosampler

Overview

The Hanon K1160 Automated Kjeldahl Nitrogen Analyzer—paired optionally with the K1124 24-position autosampler—implements the classical Kjeldahl digestion and distillation method in a fully automated, regulated laboratory environment. It quantifies total nitrogen content via acid digestion, alkaline distillation, and potentiometric titration, delivering traceable, auditable results compliant with international standard methods including AOAC 984.27, ISO 8968-1, ASTM D1122, and USP <467>. Engineered for precision and regulatory rigor, the system integrates real-time process monitoring, electronic signature support, and full data integrity architecture to meet GLP and GMP requirements across food safety, agricultural research, pharmaceutical QA/QC, and environmental testing laboratories.

Key Features

• Fully automated workflow: digestion (external), distillation, titration, calculation, reporting, and waste disposal—without manual intervention.
• Simultaneous distillation and titration with variable-speed titration control reduces cycle time by up to 33% versus conventional sequential operation.
• Android-based operating system with 10-inch high-resolution capacitive touchscreen enables intuitive method setup, live titration curve visualization, and on-the-fly parameter adjustment.
• Three-step titration resolution (0.2 / 0.4 / 1.0 µL/step) ensures optimal balance between speed and endpoint accuracy across diverse sample matrices.
• Integrated metal condenser assembly reduces cooling water consumption by 50% while maintaining consistent outlet temperature monitoring (±0.5 °C) to guarantee complete condensation and prevent nitrogen loss.
• Non-contact liquid level sensing technology eliminates mechanical wear and improves long-term reliability of reagent delivery and waste handling subsystems.
• Modular titration module design isolates titrant delivery from ambient conditions, minimizing drift and enhancing reproducibility over extended run times.
• Unified CAN bus interface enables seamless plug-and-play integration of the K1124 autosampler—no external power supply required—and supports synchronized batch processing of up to 24 samples per cycle.

Sample Compatibility & Compliance

The K1160 accommodates solid samples up to 5 g and liquid samples up to 20 mL, supporting routine analysis of cereals, dairy products, meat, feedstuffs, soil extracts, wastewater digests, and pharmaceutical excipients. Its ≥99.5% nitrogen recovery rate meets AOAC performance criteria for method validation. The system’s firmware enforces role-based user access control (administrator, analyst, reviewer), time-stamped electronic signatures, and immutable audit trails—fully aligned with FDA 21 CFR Part 11 Subpart B requirements. All data—including raw titration curves, calibration logs, and maintenance records—is stored locally (1 million entries) and synchronizes automatically to secure cloud infrastructure with TLS 1.2 encryption and configurable retention policies.

Software & Data Management

Hanon’s proprietary LabLink software provides centralized instrument control, method library management, and cross-platform data export (CSV, PDF, XML). Batch testing mode allows analysts to define multi-sample sequences with independent digestion times, distillation volumes, and titration parameters—reducing operator input errors and improving throughput consistency. Built-in QC tools include spike recovery tracking, calibration verification prompts, and automatic flagging of outliers based on user-defined statistical limits (e.g., %RSD thresholds). System updates are delivered over LAN or Wi-Fi with version-controlled firmware signing and rollback capability. Exported reports include full metadata: instrument ID, operator ID, timestamp, method version, raw sensor readings, and digital signature hash—ensuring full traceability during regulatory inspections.

Applications

• Food & Beverage: Crude protein determination in flour, milk powder, infant formula, and plant-based alternatives per ISO 20483 and Codex Alimentarius standards.
• Agriculture & Feed: Total nitrogen and crude protein analysis in silage, soybean meal, fishmeal, and fertilizer formulations.
• Environmental: Kjeldahl nitrogen in municipal wastewater, sludge, and soil leachates per EPA Method 351.2 and ISO 11905-1.
• Pharmaceuticals: Nitrogen content verification in active pharmaceutical ingredients (APIs), excipients, and capsule shells under ICH Q5C and USP <467>.
• Academic & Research: Teaching labs benefit from guided workflows and standardized reporting; research labs leverage API access for custom data pipeline integration.

FAQ

Does the K1160 support remote monitoring and control?
Yes—via Ethernet or Wi-Fi, authorized users can view real-time status, initiate runs, download reports, and receive email/SNMP alerts for completion or fault conditions.

Is method validation documentation provided?
Hanon supplies IQ/OQ documentation templates, performance qualification protocols, and a comprehensive validation guide aligned with ISO/IEC 17025 and FDA guidance for analytical instrument qualification.

Can the system be integrated into a LIMS?
Yes—the K1160 supports ASTM E1384-compliant HL7 and ASTM E2500-compliant CSV/XML export, and optional OPC UA server add-on enables bidirectional LIMS communication.

What maintenance is required for long-term reliability?
Scheduled tasks include quarterly condenser cleaning, biannual pump tubing replacement, and annual calibration of titration syringe and pH electrode—automatically logged and reminder-enabled.

How does the K1124 autosampler prevent cross-contamination?
The K1124 physically separates wash and analysis positions; each digestion tube undergoes dedicated rinse cycles using fresh reagent before distillation, and the robotic arm employs sealed fluid pathways with positive-pressure purge between transfers.