KDN-20K Automatic Nitrogen Analyzer, 0.1～240.0MG Nitrogen, SHANGHAI XINJIAN INSTRUMENT & EQUIPMENT CO. LTD. (CAT#: STEM-AIAE-3352-LGZ)

KDN-20K automatic nitrogen analyzer, based on the classic Kjeldahl nitrogen determination method, adopts careful logic algorithm, combined with humanized operation interface and intelligent microcomputer system control, it can quickly, conveniently and accurately detect The nitrogen element and protein content in the sample do not require personnel to be on duty during the whole process. Whether it is a sample of unknown content with high or low protein content, the detection can be completed. In addition, the manual mode of the instrument can operate each step separately, which greatly improves the flexibility of operation and the applicability of the instrument. The unique one-key detection of blanks and automatic input of blank values, as well as one-key air-steam cleaning of the instrument, greatly facilitates the user's daily inspection and instrument maintenance work.
The operation, setting and detection database of the instrument are managed by the three-level authority. The detected data can be printed directly with the printer that comes with the instrument, or exported to a U disk in batches for editing and summary statistics. In terms of safety, the 20K has also made various considerations and designs to ensure the safe operation of personnel and instruments, taking into account the safety while maintaining high automation efficiency. In the field of application, 20K has built-in 2 sets of calculation formulas. In addition to meeting the requirements of national standard formulas such as GB 5009.5-2016, GB/T 6432-2018, and GB/T 22923-2008, it also supports GB 11891-89 water quality testing formulas. Can adapt to more industries and national standard requirements, more humane.
KDN-20K automatic nitrogen analyzer adheres to the design concept of accurate, fast, convenient, safe and user-friendly fiber inspection instruments, aiming to meet customer needs and continuously improve customer experience.

Measuring range: 0.1～240.0mg nitrogen
Sample weight: The empirical value is solid ≤ 8.0g, liquid ≤ 30.0ml (water quality test can be up to 300ml)
Accuracy: 0.3% relative difference
Repeatability: Parallelism ≤0.2%
Recovery rate: ≥99.5%
Measurement speed: 3～8min/sample
Titration accuracy: 0.1μl/step
Distillation time: 0～720 seconds
Display mode: 7-inch LCD ultra-fine color screen
Control method: touch
Detection database storage: 30,000
Number of programmable blocks: unlimited
Number of accounts that can be set: Unlimited
Printer: support
Titration volume: 50µl～unlimited
Power: 1700W
Power supply: 220V±10%, 50HZ～60HZ
Size: 580×430×750 (mm)

Three-level user rights management.
Test data can be exported via USB.
The titration system adopts dynamic titration technology, titrating while distillation, and can automatically determine the unknown sample and adjust the titration speed.
The waste liquid of the digestion tube and receiving bottle is automatically emptied and cleaned.
The protective door opens and closes automatically to prevent splashing caused by the rupture of the digestive tube during distillation.
The remaining amount of titrant is monitored, and the shortage alarm reminds to add.
Evaporation furnace: real-time water level, temperature, pressure monitoring, anti-dry burning device, abnormal alarm.
Real-time monitoring of condensate flow, and alarm for insufficient flow.
Digestive tube and receiving bottle are illuminated by LED, which can open and close automatically.
One-click detection of blanks and automatic entry of blank values.
One-key instrument automatic steam cleaning.
There are 7 built-in micro-pumps to extract reagents independently, and 3 stepper motors control the action.
The splash-proof pipe is formed by high-performance strong acid and alkali resistant plastic mold.
Operation mode: automatic/manual dual mode can be switched at any time.
Titration speed: three-stage speed automatic switching control, 0.5~10S/drop.
Calculation method: The final result is automatically calculated, and two sets of calculation formulas are supported for solid samples (GB 5009.5) and liquid samples (GB 11891).

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