Fully Automatic Kjeldahl Nitrogen Analyzer Model: JK9870

Product Application:

The Kjeldahl method is a classic method for determining nitrogen. It is currently widely used for determining nitrogen-containing compounds in soil, food, livestock, agricultural products, feed, and other applications. This method requires three steps: sample digestion, distillation separation, and titration analysis.

The JK9870 Fully Automatic Kjeldahl Nitrogen Analyzer is a nitrogen (protein) analysis system developed based on the classic Kjeldahl method. It utilizes fully automatic distillation and titration technology, with a colorimetric endpoint determination method. Its methods and manufacturing procedures comply with the "GB/T 33862-2017 Fully (Semi) Automatic Kjeldahl Nitrogen Analyzer" manufacturing standard and relevant international standards.\

Product Features:

· Embedded operating system with proprietary intellectual property rights, featuring a 7-inch color touchscreen and a Chinese-based interactive menu, making operation simple and easy to learn.

· Automatic shut-off function: The system automatically shuts down after 60 minutes of unattended operation, ensuring energy conservation, safety, and reliability.

· Operation instructions, reagent preparation, precautions, and maintenance information are displayed on the screen for easy access and use.

· Utilizes R, G, and B color sensors, offering a wide color range, high accuracy, and fast response.

· Three R, G, and B titration curves allow visualization of sample changes during titration, assisting in analysis.

· Titration accuracy verification ensures the accuracy of analytical data.

· Exposed titration cup allows for easy observation of the titration process and cleaning.

· Consists of a German-made linear motor and syringe. The plunger-type titration pump offers high control accuracy and excellent stability.

The instrument features a built-in protein coefficient lookup table for easy access, querying, and participating in system calculations.

16MB of data storage can store 100,000 sample records for easy review, and a 5.7cm thermal printer with automatic paper cutter is included.

99 user-defined program (recipe) management systems are available.

Multi-function interface connects to the refrigeration system and reagent tank level sensor.

Delayed analysis allows for measurement of nitro-based samples.

Metal (304 stainless steel) steam boiler: Stable, reliable, and pressure-resistant.

The steam system provides constant pressure steam flow, ensuring stability and safety.

Professional, high-performance pumps, valves, and imported piping ensure product reliability and stability.

Safety protection systems:

· Leakage protection system prevents leakage and electric shock, ensuring operator safety.

· Digestive tube is missing, the system will not add reagents or heat, preventing injuries from reagents or steam.

· Safety door is not closed, the system will not operate. The 5mm thick transparent safety door ensures personal safety.

· Steam system is dehydrated, the system will automatically shut down and alarm, preventing accidents.

· The steam boiler is overheated, the system will automatically shut down and alarm.

Technical Specifications:

· Analytical Range: 0.1-240 mg N

· Precision (RSD): ≤0.5%

· Recovery (Error of Indication): ≥99.5% (±0.5%)

· Titration Accuracy: 0.75 μL/step

· Sample Analysis Time: 4-6 min (Cooling Water Temperature 18°C)

· Titrant Concentration Range: 0.01-5 mol/L

· Titrant concentration input method: Manual input

· Data storage capacity: 100,000 data sets

· Printer: 5.7cm thermal printer with automatic paper cutter

· Communication interfaces: 232/network/cooling water/reagent level

· Delayed analysis: Response time: 0-2 hours

· Alkali safety mode: 0-999 seconds

· Auto-off time: 60 minutes

· Operating voltage: AC220V/50Hz

· Heating power: 2000W

· Dimensions: 500*460*710mm

· Net weight: 36kg

Optional accessories:

Test tube rack

· Reagent tank level sensor

JK9870 product configuration:

· Main Machine: 1 · 10L reagent barrels: 3 · 20L waste liquid collection barrel: 1 · 1L titrant reagent bottle: 1

· Printer paper: 8 rolls · 250g catalyst sheet: 1 bottle · 3m long reagent tubing: 4 · Cooling water inlet and outlet pipes: 1 each · Power cord: 1