Overview
LICHEN Technology KDN series nitrogen determination instrument distillation device (model A) works on the principle of Kjeldahl nitrogen determination, which is suitable for measuring the nitrogen content of various samples. The products are divided into two series: fully automatic and semi-automatic. Heating mode includes electric heating tube heating (suitable for different water sources) and Electrode heating (suitable for water sources with relatively low conductivity).
Features
1. Using international standard Kjeldahl nitrogen determination method: concentrated sulfuric acid digestion, alkaline environment steam distillation, Boricacid absorption, indicator titration endpoint Color determination method.
2. Self-contained, can be switched at any time (only HR-500, HR1000 models).
3. The inner lining is ABS anti-corrosion board, which effectively prevents corrosion.
4. New Appearance Design, Reliable Circuit Design.
Principle
The nitrogen analyzer is based on the principle of Kjeldahl nitrogen determination. The sample is digested by concentrated sulfuric acid, steam distillation is carried out in an alkaline environment, and the ammonia produced is absorbed by Boricacid. Finally, the end point is determined by indicator titration, so as to calculate the nitrogen content in the sample.
Applications
Food, Food, Dairy, Beverage, Feed, Soil, Water, Drugs, Sediments and Chemicals
Standards
International standard Kjeldahl method
Steps
1. Sample digestion: The sample is digested using concentrated sulfuric acid.
2. distillation: the digested sample is placed in an alkaline environment for steam distillation.
3. Absorption: Ammonia produced by distillation is absorbed with Boricacid solution.
4. Titration: Use the indicator for titration to determine the destination Color.
5. Calculation: Calculate the nitrogen content of the sample based on the titration results.
Notice
• The input power supply is AC220V 50HZ, Power 800W, please make sure the power supply matches.
• The steam source is tap water.
The sample size needs to be controlled: the solid sample is less than 5g, and the liquid sample is less than 20ml.
Determination range: nitrogen content 0.02-98% (or 0.1-220 mg).
• The distillation rate depends on the sample volume and is usually 4 to 10 minutes.
• Net weight of equipment 19kg, Dimension 300 * 330 * 720mm, please pay attention to the handling and placement space.
