China

QIWEI QW-KDN type, Kjeldahl nitrogen meter distillation device, automatic nitrogen measurement distillation system

SE
Using Kjeldahl principle, measuring range of 0.1~ 200mgN, collection rate ≥ 99%. Automatic water, alkali and distillation functions, easy to operate, suitable for a variety of sample detection.
$475.00/set
PromotionLoading...
Coupon
Model：
Certificate
Contact
Details SPEC Con

QiWei QW-KDN type Kjeldahl nitrogen meter (distillation)SPEC

QiWei QW-KDN type Kjeldahl nitrogen meter (distillation)Details

QiWei QW-KDN type Kjeldahl nitrogen meter (distillation)Packing list

SKU
NB050289
Determination variety
Grain, Feed, Food, Dairy, Beverage, Soil, Water, Sediment and Chemicals etc.
Measurement range
Nitrogen content in 0.1~ 200mgN (mg nitrogen), (nitrogen content 0.1%~ 99%)
Measured quantity
Single continuous distillation measurement
Chill down water consumption
3-4L/min (water temperature below 25 degrees)
collection rate
≥ 99% (relative error, including digestion)
Sexual repeability rate
Relative standard deviation ＜ +/- 1%
Operating Mode
semi-automatic
Working time
Distillation time 5-15 minutes, (depending on sample and nitrogen content)
Rated Voltage
220V/50Hz
Rated power
800W
QW-KDN type
Kjeldahl nitrogen meter (distillation)
Using Kjeldahl principle, measuring range of 0.1~ 200mgN, collection rate ≥ 99%. Automatic water, alkali and distillation functions, easy to operate, suitable for a variety of sample detection.
QIWEI QW-KDN type, Kjeldahl nitrogen meter distillation device, automatic nitrogen measurement distillation system Picture

Product Introduction

KDN is an automatic nitrogen measurement distillation system designed according to the classical (Kjeldahl nitrogen determination) method. The main workflow of the instrument includes: automatic water addition (including automatic water level detection function), automatic alkali addition (button control), manual acid addition (manual configuration), automatic distillation (button control) and other parts. The instrument is simple to operate; safe and reliable to use; time-saving and labor-saving; It is suitable for analysis, teaching and research in grain and oil testing, feed analysis, plant nutrient testing, soil and fertilizer testing, chemical industry and other industries, and is a reliable tool for operators and users.

Working principle (Kjeldah's principle)

Proteins are organic compounds that contain nitrogen. Food is heated and digested together with sulfuric acid and catalysts to break down proteins, and the decomposed ammonia combines with sulfuric acid to form ammonium sulfate. Then the ammonia is free under the action of alkaline distillation, and the released ammonia and water vapor are condensed through the condenser tube and 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 consumption of acid by the conversion coefficient.

FAQ
QI want to measure the protein content in grain. Is QIWEI's Kjeldahl Nitrogen Analyzer suitable?
A Yes, QIWEI QW-KDN Kjeldahl nitrogen analyzer is specially used for protein determination of grain, feed and other samples. It uses the classic Kjeldahl nitrogen determination method to accurately calculate protein content through digestion, distillation, absorption and titration processes. Measurement range 0.1-200 mg nitrogen, which can meet the needs of grain detection.
QI want to measure the protein content of grains. Which machine should I use?
A QIWEI QW-KDN Kjeldahl Nitrogen Analyzer is recommended. This instrument is specially used for the determination of protein content. It uses the classic Kjeldahl Nitrogen Determination method to accurately calculate protein content through digestion, distillation, absorption and titration. After the grain sample is digested with sulfuric acid, the instrument can automatically complete the alkali addition and distillation process. The operation is simple and safe, and it is suitable for use in the grain and oil testing industry.
QIs this instrument automatic or manual? How is the function?
A QW-KDN is a semi-automatic working mode. It has the functions of automatic water addition, automatic alkali addition and automatic distillation. You need to manually add acid to configure the sample. This not only ensures the simplicity of operation, but also ensures the measurement accuracy. The collection rate is ≥ 99%, and the repeability deviation is less than +/- 1%. One determination only takes 5-15 minutes, which is suitable for protein content analysis in conventional laboratories.
Filter Brand Store Contact