SK-100AR laboratory ammonia nitrogen analyzer

Products introduction

Method: HJ 535-2009 Nessler's reagent spectrophotometric method

SK-100AR laboratory ammonia nitrogen analyzer ，one uses Nessler's reagent spectrophotometric method.

SK-100 series laboratory ammonia nitrogen analyzer is the production of new - generation of automatic ammonia nitrogen analysis instrument, witch is researched and developed by our company based on the state environmental protection department -- ammonia test items standard analysis method HJ 535-2009 « water quality -- Determination of ammonia-nitrogen Nessler's reagent spectrophoto metric method » and the principle of flow injection analysis technology, applicable to the environmental monitoring, steel, oil, chemical, health and epidemic prevention, irrigation works, agriculture, aquaculture, wastewater treatment, water quality control such as the need for ammonia nitrogen in water by the industry and sector analysis.

The basic principle of the method is: by mercuric iodide ( or two mercuric chloride ) with potassium iodide alkaline solution preparation of Nessler's reagent in the presence of [HgI₄]^2- as chromophores, and NH4⁺ complex to form the maximum absorption wavelength in 420nm yellow brown complexes.

Within a certain range of concentration, the fluid under test at the appropriate wavelength and absorbance of the complexes formed by linear positive correlation between the number of, therefore, can be determined by colorimetric measurement of NH4⁺ content in solution. The apparatus configured a unique distillation device, can water the ammonia nitrogen in alkaline conditions of heating decomposition, the free NH3 is water vapor carrying the sample matrix and separation of the impurities, then enter the measurement system, in accordance with Nessler's reagent spectrophoto metric method for determination of the test principle.

>Instrument features

Analysis of speed:

The single sample + sample pretreatment + colorimetry + measurement + results showed that =10min completed a test sample.

High test precision:

Using a unique color comparison device, a liquid path control system and powerful microprocessor for instrument control, eliminate tested in various interference factors, so that the measuring accuracy, precision is greatly improved.

The built-in pretreatment function:

Independent researched and development, advanced, unique sample pretreatment device-patented technology Patent No.: ZL200620119263.5, witch enhances the measuring range of the instrument and the sample to be measured accuracy. Containing suspended particles and colored water after simple treatment can be directly detected.

The advantages of simple operation, high degree of automation: instruments of all functions are controlled by operating a computer keyboard, realize the full automatic analysis instrument.

Low fault rate:

Because the instrument optical system and a light source system are the use of the latest international technology, circuit system adopts a large-scale integrated circuit design, thus simplifying the instrument's optical system and circuit structure, reduce the failure rate of equipment.

The use of low cost:

Each completed a test sample, the sample injection volume is only 10ml, nessler's reagent consumption is about 1ml, greatly limits for the operator and the use cost is saved.

Convenient maintenance:

In addition to the regular adding reagent, according to different use conditions, instrument tubing months even years, witch only need to be replaced, the other daily maintenance is very simple.

The standard 50 three-dimensional auto sample, can realize the order of the samples into the sample and arbitrary sample.

> Technical indicators

Convenient operation of human nature design interface

• Analysis of high efficiency

Each sample detection process only needs 10 minutes, compared with the traditional method, greatly improving the speed of sample analysis.

The analysis result is accurate and reliable

Wide range of determination of 0.1mg/L-10mg/L, to meet the majority of water sample products analysis

The correlation coefficient of R≥ 0.999

High precision≤ 3%

A high degree of automation

Based on the Window operating control / data acquisition and processing software, to sample, distillation, colorimetric analysis, data acquisition, data processing, report to play, printing completely realizes automation.

A wide range of applications

Applicable to the environmental monitoring, steel, petroleum, chemical industry, agriculture, health and epidemic prevention, industry, irrigation, aquaculture, wastewater treatment, water quality control such as the need for ammonia nitrogen in water by the industry and sector analysis.