Kjeldahl apparatus

Instrument Introduction

Automatic Kjeldahl Nitrogen Analyzer is an automated instrument for the determination of nitrogen content and protein content according to Kjeldahl method. It can be widely used for the analysis of nitrogen and protein in the fields of food processing, feed production, tobacco, animal husbandry, soil fertilizer, environmental monitoring, medicine, agriculture, scientific research, teaching and so on.

According to the principle of Kjeldahl Nitrogen Determination, the instrument performs automatic quantitative addition of reagents, distillation, absorption, titration and output of test results on the sample after digestion, and the results can be the nitrogen content or converted to protein content. Specific reaction steps for the sample after digestion of ammonium sulfate and alkali reaction to produce ammonia, ammonia and steam together through the condensation tube condensation is collected into the addition of boric acid in the absorbent, while the absorbent in the indicator color change, then the instrument for automatic titration, the color sensor can automatically determine the end point of the titration, according to the standard titration of the consumption of acid can be calculated the amount of nitrogen in the sample.

All the steps of Automatic Kjeldahl Nitrogen Determination Instrument are completed automatically according to the program. It provides great convenience for inspectors in nitrogen and protein determination. It has the characteristics of safe use, reliable, simple operation, time-saving and labor-saving.

Advantageous features

(1) 10.1 inch touch screen, Android 10 system.

(2) Automatically complete the addition of alkali, boric acid, diluent, distilled water and other liquid addition steps; automatically complete the distillation, absorption, titration and other operating steps; titration is completed automatically after the reaction cup emptying and cleaning.

(3) Evaporation furnace water level monitoring, anti-dry burning protection, condensate flow rate monitoring, condensate tube temperature detection and other protective functions.

(4) High-capacity 16G storage capacity, detection results storage capacity of 5 million.

(5) The test results are in Excel table, which can be directly copied to U disk.

(6) Test results can be batch printed and batch uploaded.

(7) High-speed thermal printer, test results can be automatically printed test report.

(8) With wifi networking function, test results can be directly uploaded to the platform.

(9) Program control condensate on and off, saving water consumption.

(10) Condensate flow rate monitoring, low flow rate alarm.

(11) Evaporator water level, temperature, pressure and other multiple protection.

(12) Adopt strong corrosion-resistant devices.

Instrument parameters

(1) Measuring range: 0.1~240.0mg nitrogen.

(2) Sample weight: solid ≤ 8.0g, liquid ≤ 30.0ml

(3) Measurement accuracy: relative difference ≤1%

(4) Repeatability: Parallel difference ≤0.5%

(5) Titration accuracy: 1.0uL/step

(6) Condensate consumption: 1.5L/min

(7) Recovery rate: 99% ~101

(8) Determination speed: 3~9min/sample

(9) Power consumption: ≤1500W

(10) Temperature: 10-35°C

(11) Humidity: relative humidity is not greater than 85

(12) Voltage: 220V 50HZ

Accessories

1 Instrument main unit 1 set

2 power cord 1

3 Reagent bucket 5L 4 sets

4 Reagent bucket 1L 1 pc

5 Thermal printing paper 1 roll

6 Silicone tube 4*8mm 2 meters

7 Liquid level meter 300mm 3pcs

8 Teflon tube 1*2mm 1 meter

9 Titration cup (with Teflon lid) 2 pcs.

10 Instruction manual 1 copy

11 Certificate of Conformity 1 sheet

Protein conversion factor table (GB5009.5-2016)Food category Conversion coefficient Wheat Whole wheat flour 5.83 Wheat bran 6.31 Wheat germ 5.8 Wheat germ flour, rye, common wheat, flour 5.7                   Oats, barley, rye flour 5.83                  Millet, rye 5.83                  Corn, rye, feed wheat, sorghum 6.25 Oilseeds Sesame, cottonseed, sunflower, castor, safflower 5.3 Other oilseeds 6.25 Canola 5.53 Nuts, seeds Brazil nuts 5.46 Peanuts 5.46 Almonds 5.18 Walnuts, hazelnuts, coconuts, etc. 5.3                  Rice and rice flour 5.95 Eggs Eggs (whole) 6.25 Yolks 6.12 Egg white 6.32                Meat & meat products 6.25               Animal gelatin 5.55               Pure milk and dairy products 6.38              Compound formulas 6.25              Casein 6.4              Collagen 5.79 Legumes Soybeans and their roughage products 5.71 Soy protein products 6.25 Other foods 6.25

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