X1003CODAmmonia nitrogen total phosphorus analyzer

product overview

The determination of COD is carried out using a closed catalytic digestion tube⽐⾊Method for determination of ammonia nitrogen⽤receive⽒reagent⽐⾊Method for determination of total phosphorus⽤Ammonium molybdate spectrophotometric method⽐⾊, Select⽔Quality inspection items⽬The light source emits a signal⾄Sensor, processed by RAM processor⾏The data processing directly calculates the sample concentration value and displays it in mg/L.

Detection Principle

COD determination principle (chromium method): In a strong acidic solution and in the presence of excess potassium dichromate, silver sulfate is used as a catalyst to catalyze the oxidation of reducing substances in water by heating. The COD value of the water sample is determined by establishing the relationship between the absorbance value of hexavalent chromium or trivalent chromium and the COD value of the water sample.

The principle of ammonia nitrogen determination (Nessler's reagent method): Ammonia nitrogen in the form of free ammonia or ammonium ions reacts with Nessler's reagent to form a light reddish brown complex. The absorbance of the complex is proportional to the ammonia nitrogen content to determine the ammonia nitrogen content in the water sample.

Principle of total phosphorus determination (ammonium molybdate method): After digestion, all phosphorus in the sample is oxidized to orthophosphate. In an acidic medium, orthophosphate reacts with ammonium molybdate to form phosphomolybdic acid in the presence of antimony salt, which is immediately reduced by ascorbic acid to form a blue complex. Determine the total phosphorus content in the water sample based on the absorbance of the complex.

Product Features

1. Determination of COD⾏The national standard HJ/T399-2007 provides accurate and effective data.

2. Determination of Ammonia Nitrogen⾏National standard HJ535-2009, accurate and effective data

3. Determination of total phosphorus⾏The national standard GB11893-89 ensures accurate and effective data.

4. Enter⼝Solid state cold light source with stable optical performance,⽆Need to preheat the light source, light source lifespan⻓For 10 years.

5. Equipped with precision⽔Quality intelligent detection system, accessible⾏Guided detection and contamination⽔Batch testing of samples.

6. Dissolve⽐⾊⼀Body,⽆Need to be replaced with⽐⾊⽫Testing, determination⽅Simple method⾼Efficiency.

7.4.3 English⼨⾼Clear color screen, flat UI design,⽅convenience⽤Household Quick Up⼿Operation.

8. ABS material,⾼Strength, corrosion resistance, and durability⾼Warm shell.

9. Testing completed⾃Dynamic printing density value, or select⼿Dynamic printing mode.

10. Equipped with pre made reagents, only need to be added to the test tube for testing⽔After digestion, the sample enters⾏testing.

11. Measurement instrument and digestion instrument⽤Split design does not affect the stability of the light source system and optical sensor.

Technical Parameter

Configuration List

1 host, 1 16 well digestion apparatus, 2 pre made COD reagents (1 high and 1 low), 1 set of ammonia nitrogen reagent, 1 set of total phosphorus reagent, 1 pipette, 1 test tube rack, 18 digestion colorimetric tubes, 1 brown bottle, 4 dilution bottles, 1 piece of velvet cloth, 2 pairs of gloves, and 1 user manual.