The Chemistry Behind

The core of Kjeldahl method is to convert organic nitrogen into inorganic ammonium salts, and then quantify them through distillation and titration.
This process is usually divided into three key stages:

Digestion: Under the action of a catalyst, concentrated sulfuric acid is used to convert organic nitrogen in the sample into stable ammonium salts (usually ammonium sulfate).
Distillation: Alkalizing the digested mixture to convert ammonium salts into ammonia gas (NH3), and removing the ammonia gas through steam distillation.
Titration: Absorb distilled ammonia into excess boric acid solution, then titrate with standard hydrochloric acid, and calculate nitrogen content based on the amount of acid consumed by titration.

Features of JK9830 Kjeldahl nitrogen analyzer

1. One click automatic completion: reagent addition, temperature control, cooling water control, sample distillation separation, data storage display, completion prompt.
2. The control system adopts a 7-inch color touch screen, with Chinese and English conversion, which is simple and easy to operate. 3. Automatic analysis and manual analysis with dual modes.
3. The three-level permission management, electronic records, electronic tags, and operation traceability query system comply with relevant certification requirements.
4. The system automatically shuts down after 60 minutes of unmanned operation, which is energy-saving, safe, and reassuring.
5. Input titration volume to automatically calculate and analyze results, store, display, query, and print, with some functions of fully automated products.
6. The instrument has a built-in protein coefficient query table for users to access and participate in system calculations. 8. The distillation time can be freely set from 10 seconds to 9990 seconds. 9. The data storage can reach up to 1 million records for users to access.
7. The splash proof bottle is made of “polyphenylene sulfide” (PPS) plastic processing, which can meet high temperature requirements,
   Application of strong alkali and strong acid working conditions.
8. The steam system is made of 304 stainless steel, which is safe and reliable.
9. The cooler is made of 304 stainless steel, which has a fast cooling speed and stable analysis data. 13. The leakage protection system ensures the safety of operators.
10. The safety door and safety door alarm system ensure personal safety. 15. The absence of a protective system for the digestion tube prevents reagents and steam from injuring people. 16. Steam system water shortage alarm prompt, shutdown to prevent accidents. 17. Steam boiler overheating alarm, shutdown to prevent accidents.

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