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KDN Kjeldahl Nitrogen Analyzer
If you have any questions, please contact us immediately.
- Product Description
-
The KDN KjeldahI nitrogen analyzer is an automatic nitrogen measurement and distillation system designed base on the classic (KjeldahI nitrogen determination) method. The instrument in the distiller section is mainly divided into: automatic water level detection, automatic water addition (internal program control); Automatic alkali addition (button control); Manual acid addition (manually configured); Automatic distillation (button control) and other parts. The instrument is easy to install and operate, safe, reliable, time-saving and labor-saving used, Suitable for analysis, teaching and research in industries such as grain and oil testing, feed analysis, plant nutrient testing, soil and fertilizer testing, pharmaceuticals, chemical engineering, etc.
It is an important physical and chemical analysis instrument for product quality testing.
Product Advantages.
Detailed Photos.
Please note.The appearance and packaging of the product are continuously upgrading.
Product Parameters.The protein analyzer can measure varieties
Foodstuff, feedstuff, foods, dairy products, drink, soil, water, medicine, precipitate, chemical.
Working method
Semi-automatic
Measure quantity
Digest 4~20 pieces of tubes at the same time, adopt single distillation.
Measuring range
0.1mgN~200mgN (nitrogen content 0.1%-99%)
Recovery rate
≥99% (relative error, including digestion process)
Repetition rate
Relative standard deviation＜±1%
Working hours
Digestion time: 40~90 minutes, distillation time: 5~15 minutes. (According to different samples, time required is also different.)
Water intake method
Tap water and distilled water, which can be used in a wide range of areas
Sample amount
Solid 0.20g~2.00g, semi-fixed 2.00g~5.00g, liquid 10.00ml~25.00ml
Distillation speed
5~15 minutes/sample (depending on the amount of sample)
Cooling water consumption
Digestion: 5L/min Distillation: 3L/min
Water supply
Water temperature is less than 20℃
Digestion tube capacity
300ml
Power supply
AC220V/50Hz
Power
Distillation: 1000W
Digestion: 4 holes--1000W, 8 holes--1500W, 20 holes--2000W
Dimensions of measuring instrument
380×320×670mm
Weight
20 Kg
Working Principle.
Proteins are organic compounds containing nitrogen. Food is heated and digested together with sulfuric acid and catalyst, causing protein to decompose. The decomposed ammonia combines with sulfuric acid to form ammonium sulfate. Then the ammonia is free under the effect of alkalization distillation. The released ammonia and water vapor are condensed together through the condenser tube and then enter the conical flask containing boric acid. After being absorbed by boric acid, it is titrated with sulfuric acid or hydrochloric acid standard solution and the protein content is obtained by multiplying the acid consumption by the conversion coefficient.
● The instrument is composed of digestion furnace (different types for selecting) and azotometer distillatory.● The digestion furnace (numeric display model) is controlled by temperature control meter. It adopts infrared radiation heating. Insert the sample into the heating furnace to get the best heating effect.● Through the drainpipe and the air-bleed three-way, poisonous gases (e.g. SO2) emitted from the digestion tube could be taken to the cloaca by water (the gases could also be recycled by vacuum pump and recycle bottle) which could control the emitting of poisonous gases and save the installation of ventilated case. Samples could be digested thoroughly in about 40-90 minutes (according to the amount of nitrogen).Attention.
This instrument is a distillation unit; it should be used together with digestive furnace. Models of digestive furnace are: KDN-04(4-holes), KND-08(8-holes), KDN-20(20-holes), For more details, please contact us.
Note: The ZDDN - II model can also choose manual mode.
Agri-testing Instrument.
FAQ.
Q1. How can I choose the suitable one?
Please tell us your detailed requirements by mail or online, we will recommend the suitable one as your request.
Q2.How can I pay?
We accept many payment term, such as T/T, Western Union…
Q3.When I receive it after pay?
Normal models can be delivered with 5-7days, please contact us to check transport time to your address.
Q4.What should I do if I do not know how to use?
Manual user will be sent together, you can also contact us with more technological support.
Q5.What should I do if some parts broken?
We do standard export package and 1 year warranty except wear parts.
KDN Kjeldahl Nitrogen Analyzer
If you have any questions, please contact us immediately!
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No. 68, Airport Road, Development Zone, Xinle City of Shijiazhuang, Hebei Province, China.
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