Fully Automatic Water Quality Multi-Parameter Analyzer (Fully Automatic Total Phosphorus and Total Nitrogen Analyzer)

Development Background:

According to the national standardGB 11893-89, it specifiesthat under neutral conditions, potassium persulfate is used to digest the sample, and all phosphorus is oxidized to orthophosphate; under acidic conditions, orthophosphate reacts with ammonium molybdate, and in the presence of antimony salt, phosphomolybdic heteropoly acid is generated, which is immediately reduced by ascorbic acid to form a blue complex. The total phosphorus content is determined by spectrophotometry; simultaneouslythe standardHJ636-2012 specifies the determination of total nitrogen in water quality by alkaline potassium persulfate digestion UV spectrophotometry. The principle is that under 120-124°C, alkaline potassium persulfate converts nitrogen-containing compounds in the sample into nitrate, which can be measured by UV-visible spectrophotometry to determine the total nitrogen content. This instrument mainly references these two standards to achieve automated determination of total phosphorus and total nitrogen.

Product Technical Advantages:

1. Capable of fully automated batch sample digestion, cooling, constant volume, mixing, detection, cleaning of colorimetric cells, data analysis, and other operations;

2. Can achieve semi-automated batch addition of oxidizing agents and standard solutions, as well as digestion steps; also can automatically perform post-digestion reagent addition, constant volume, mixing, detection, cleaning of colorimetric cells, data analysis, and other operations;

3. Implements a manual-like mixing mode to avoid contamination or loss caused by blowing or suction mixing modes;

4. Uses a one-time reagent injection method to minimize cross-contamination between different experiments;

5. Employs high-precision injection pumps for reagent addition to avoid low accuracy issues caused by peristaltic pumps;

6. Achieves automatic opening and closing of digestion bottles, with automatic control of digestion time;

7. Automatically draws standard curves and intelligently dilutes samples proportionally;

8. Conducts experiments in batches, improving efficiency compared to single-sample experiments;

9. The instrument can be expanded to detect ammonia nitrogen, nitrates, and other water quality testing items.

Contact our sales team to obtain method validation reports for total phosphorus, total nitrogen, and other testing items!