Automatic Kjeldahl Nitrogen Analyzer JK9830A, 0.1-200 mg N (CAT#: STEM-AL2-4114-ZJF)

The JK9830A 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. Integrated control functions coordinate the analytical steps and reduce manual intervention. 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
Recovery:>=99.5%
Repeatability (RSD): <=0.5%
Sample Capacity: Solid <=6 g
Liquid <=20 mL
Boric Acid, Alkali, And Diluent Addition: 0-100 mL
Sample Separation Time: 3-5 min
Distillation Time: 0-600 min
Program Memory: 10 programs
Operation: One-touch
Over-Temperature Shutdown: 120°C
Steam Overpressure Protection:>=35 kPa

Automatic reagent addition and steam distillation
Automatic sample collection and distillation termination
Automatic digestion-tube waste discharge
Modular internal structure
Color-coded tubing identification
Alkali-line cleaning function
Digestion-tube presence protection
Cooling-water and automatic-titration interfaces