ZDDN-9830A HF Semi-Automatic Kjeldahl Analyzer for Fertilizer Nitrogen and Protein Testing
Analysis range 0.1–240 mgN with recovery rate 99–101% and RSD ≤0.5%
10-inch color LCD touchscreen, stores up to 1 million data sets, built-in protein coefficient lookup table
Automatic calculation of titration results, manual/automatic digestion tube discharge, safe alkali addition 0–99 seconds
Sample analysis time 4–8 min, distillation time adjustable 10–9990 s, automatic shutdown after 60 minutes
Integrated 5.7 cm thermal printer, communication interface 232/Cooling water/Reagent barrel level
Host size: 500 × 460 × 710 mm, operating voltage AC 220V/50Hz, heating power 2000W
 

ZDDN-9870 HF Fully Automatic Kjeldahl Analyzer for Fertilizer Nitrogen and Protein Testing
Analysis range 0.1–240 mgN with recovery rate 99–101% and RSD ≤0.5%
7-inch color LCD touchscreen, stores up to 1 million data sets, built-in protein coefficient calculation
Automatic titration and distillation, adjustable titration speed 0.05–1.0 ml/s, minimum titration volume 0.2 μL/step
Sample analysis time 4–8 min, safe alkali addition 0–99 seconds, automatic shutdown after 60 minutes
Integrated 5.7 cm thermal printer for instant printing, energy-saving operation
Host size: 500 × 460 × 710 mm, operating voltage AC 220V/50Hz, heating power 2000W
 

ZDDN-9870A/B HF Fully Automatic Kjeldahl Analyzer with special operating system for chemical and compound fertilizer analysis
Analysis range 0.1–240 mgN with recovery rate 99–101% and RSD ≤0.5%
10-inch color LCD touchscreen, Windows 10 system with 27-inch computer, supports 1 million data storage and built-in protein coefficient calculation
Automatic titration and distillation, internal standard titrant calibration, alkali pipeline cleaning, and sample weighing data automatic upload
Distillation time and titration speed freely adjustable, standard/drip while steaming titration mode, safe alkali addition 0–99 seconds
Energy-saving built-in refrigeration system (-5℃ to 30℃), automatic shutdown after 60 minutes, circulation pump flow 10L/min
Integrated 5.7cm thermal printer, multiple communication interfaces including 232, Ethernet, computer, electronic balance, and reagent level monitoring
 

ZDDN-8900 Fully Automatic Kjeldahl Analyzer with 40-sample autosampler for high-throughput nitrogen and protein analysis
Analysis range 0.1–240 mgN with recovery rate 99–101% and RSD ≤0.5%
10-inch color LCD touchscreen with 1 million data storage capacity and built-in protein coefficient calculation
Automatic titration and distillation, alkali pipeline cleaning, and sample weighing data upload for high efficiency
Distillation time and titration speed freely adjustable, standard/drip while steaming titration mode
Energy-saving built-in refrigeration system, safe alkali addition, automatic shutdown after 60 minutes
Integrated printing, communication interfaces include 232, Ethernet, computer, electronic balance, and reagent level monitoring
 

Automatic Kjeldahl Protein Analyzer with microcomputer control for accurate nitrogen and protein determination in food, feed, soil, water, dairy, and chemical samples
Supports automatic and manual modes, with automatic distillation, water addition, and water level control
Large LCD touch screen for easy operation, stores up to 250 analysis procedures
Measurement range 0.1–200 mgN (0.1%–99% nitrogen), recovery rate ≥99%, relative standard deviation <±1%
Distillation time 5–15 minutes, voltage AC 220V/50Hz, cooling water consumption 3L/min
Durable, acid- and alkali-resistant ABS and plastic spray steel construction, with multiple safety protections
 

Semi-automatic Kjeldahl Nitrogen Analyzer for accurate determination of nitrogen content in food, feed, soil, water, dairy, and chemical samples
Composed of digestion furnace with numeric display and azotometer distillatory for efficient and consistent performance
Infrared radiation heating enables thorough digestion in 40-90 minutes depending on sample type
Measurement range 0.1–200 mgN (0.1%–99% nitrogen), recovery rate ≥99%, repetition relative standard deviation <±1%
Distillation time 5–15 minutes, voltage AC 220V/50Hz, cooling water consumption: digestion 5L/min, distillation 3L/min
Semi-automatic operation improves efficiency compared to manual methods, suitable for laboratories in food, agriculture, and environmental testing