Fully Automatic Kjeldahl Nitrogen Analyzer 8900, 0.1-200 mg N (CAT#: STEM-AL2-4113-ZJF)

The 8900 fully automatic Kjeldahl nitrogen analyzer is an analytical instrument for determining nitrogen in digested samples. It is intended for Kjeldahl-based nitrogen analysis in laboratory testing workflows. The system manages reagent handling and steam distillation as part of the analytical sequence. Sample ammonia is separated during distillation and transferred to the receiving stage for measurement or titration. An integrated autosampling arrangement supports sequential handling of multiple prepared samples. The fluid path is configured for repeated exposure to acidic and alkaline reagents used in Kjeldahl analysis. Protection functions monitor operating conditions and help prevent unsafe or incomplete analytical cycles. The instrument is suited to repetitive nitrogen testing where standardized operation and data consistency are required.

Analysis Range: 0.1-200 mg N
Precision (RSD): ±0.5%
Recovery:>=99.5%
Titration Resolution: 0.75 µL/step
Sample Capacity: Solid <=6 g
Liquid <=20 mL
Cooling Water Consumption: 1.2-3 L/min
Sample Analysis Time: 4-7 min
Autosampler Capacity: 20 positions
Analysis Modes: Fully automatic/manual
Nitrate Fertilizer Mode Waiting Time: 0-2 h
Sample Blank Correction: Automatic
Titration Pump Verification: 15 mL per test, ±5‰

Automatic sample-loading system
One-touch fully automatic operation
Automatic or manual titrant-concentration calibration
Titration-volume verification
Dual analytical modes for amino and nitro sample types
Modular internal structure
Color-coded tubing identification
Computer control and reagent-level alarm interfaces