OR-KNA 100 fully-automatic Kjeldahl nitrogen analyzer

1. Accuracy

Repeatability: RSD < 0.5%
Recovery rate: > 99.5%
Color determination method: Reliable three primary colors of red, green and blue are used, with three curves, standard acid amount and protein (nitrogen) content displayed in real time. It helps users to monitor the distillation, calculation and titration process in real time.
Intermittent alkali addition ensures that the acid-base reaction is controllable to avoid the escape of ammonia caused by violent acid-base reaction in the absence of steam.
Titration and distillation are performed at the same time to neutralize the steamed ammonia gas, avoid the escape of ammonia as much as possible, and reduce the detection time.
True uninterrupted distillation: Constant steam, uninterrupted steam during water replenishment to ensure smooth vaporization of ammonia.
Adjustable distillation power: Ensure good recovery of low concentration samples.

2. Safety
It has the function of real-time detection and control of the temperature of the distillation flask. If the temperature is too high, the instrument will automatically stop heating.
It can automatically detect pressure sensor, cooling water flow and water pressure in real time and alarm.
The distiller adopts double liquid level control (double safety). If the distillation flask is short of water, the instrument automatically stops heating to prevent the distillation flask from dry burning.
It has the safety door status and digestion tube in-place monitoring function to prevent accidents.
It has reagent bucket level alarm and receiver flask overflow monitoring functions.

3. Convenience
Built-in test plan: It can be directly retrieved from the instrument database to efficiently complete the testing tasks without writing it into the database again.
Automatic acid addition, automatic alkali addition, automatic dilution addition, automatic distillation, titration (distillation and titration are carried out at the same time), automatic storage, automatic printing, calculation results, automatic recording of all analysis data.
Optional data transmission function: Sample data, weight results, batch information and analysis results can be uploaded to the computer via USB or wireless transmission system. Automatic recording and data uploading can significantly reduce the risk of error, realize full traceability of sample parameters, and ensure that all data is safely stored on the computer for future reference, report and audit.
Optional permission classification function can realize data traceability management: Conform to “GMP 21 CFR Part11” regulations.

4. Beautiful Appearance
The whole instrument is made of ABS engineering plastics: It has the characteristics of corrosion resistance, long life, high strength and excellent insulation performance.
Pipeline corrosion resistance: Corrosion-resistant pipes are used inside the instrument with the warranty period of 3 years.

Technical Parameters:

Measuring range: 0.1-240mg nitrogen;

Distillation time: 3-8min/sample (Extra-large titration flask ensures long-term distillation and large-volume titration, and the distillation time can be set according to samples).

Distillation capacity: 15~30ml/min, adjustable

Host memory: 10,000 groups of data

Titration accuracy: RSD ≤ 0.01μl/step,

Sample size: Solid <5g, liquid <20ml;

Delay time: 0-1,800s (Suitable for measuring nitrate nitrogen);

Staged alkali addition: Interval 0-9s;

Distillation time: 0-20min, continuously adjustable, steam flow rate adjustable;

Printer: Ribbon printer, permanent data storage without color fading.

Repeatability: RSD < 0.5%

Recovery: > 99.5%

Power supply: AC220V ± 10%, frequency 50-60HZ

Dimensions: 500 * 350 * 720m

Digestion tube size: 300ml, 550ml, optional