Portable 3-parameter Water Quality Analyzer

I. Product Overview

This instrument is a portable integrated water quality analyser based on spectrophotometry, designed for the simultaneous rapid determination of chemical oxygen demand (COD), ammonia nitrogen (NH₃-N) and total phosphorus (TP). High-temperature digestion (for COD and total phosphorus), colorimetric measurement and intelligent data management are highly integrated. A multi-channel optical system is built in with stored national-standard curves for the three parameters and dedicated pre-prepared reagent kits. Through an intuitive interface the user completes digestion, reaction and measurement in sequence and reads the precise concentration of all three parameters at the touch of a button. The integrated portable design is ideal for commissioning at wastewater treatment sites, comprehensive environmental inspection patrols and rapid field screening.

II. Applicable Standards

HJ 535-2009 《Water quality — Determination of ammonia nitrogen — Nessler's reagent spectrophotometric method》
HJ 536-2009 《Water quality — Determination of ammonia nitrogen — Salicylic acid spectrophotometric method》
HJ/T 399-2007 《Water quality — Determination of chemical oxygen demand — Rapid digestion spectrophotometric method》
GB 11893-89 《Water quality — Determination of total phosphorus — Ammonium molybdate spectrophotometric method》

III. Measuring Principle

The instrument adopts the spectrophotometric principle and determines each parameter according to the corresponding national standard method. COD: potassium dichromate high-temperature digestion spectrophotometry. Ammonia nitrogen: Nessler's reagent or salicylic acid spectrophotometry. Total phosphorus: ammonium molybdate spectrophotometry, supporting both phosphomolybdenum blue and phosphomolybdenum yellow colorimetry. A high-precision optical path measures the absorbance of each reaction product at its specific wavelength and the concentration is calculated automatically from the stored curve according to the Lambert-Beer law.

IV. Applications

The instrument is suitable for core scenarios requiring simultaneous assessment of organic pollution, eutrophication risk and self-purification capacity. It is mainly used in municipal and industrial wastewater treatment plants for comprehensive monitoring of the biological process (for example evaluation of the carbon-nitrogen-phosphorus ratio) and to ensure that effluent parameters reliably meet the standards. It is widely used for routine environmental quality monitoring, eutrophication assessment and early warning of rivers, lakes and reservoirs, and is an ideal tool for enforcement, emergency monitoring and multi-parameter rapid screening in aquaculture and research.

V. Key Features

1. Android 7.1.1 smart operating system for a smoother interactive experience, faster response and greater stability.

2. Built-in 6-position digester and 6-position cooling fan with independent control for rapid digestion and cooling.

3. Measurement, digestion and cooling can be carried out simultaneously, greatly improving efficiency.

4. Factory-prepared reagents are supplied: simply add the water sample to the tube.

5. Favourite parameters can be pinned to the top of the item list, avoiding repeated searching.

6. Portable all-in-one design with a large-capacity lithium battery: digestion and measurement can both be carried out in the field with a single instrument.

7. Built-in thermal printer supporting automatic and batch printing, freely selectable and editable print content, and QR-code printing.

8. Built-in instructional videos let users watch the procedure while operating the instrument.

9. Wi-Fi and 4G modules for wireless data upload.

10. Data cloud platform for online storage and short- and long-term trend analysis.

11. GPS positioning displays the longitude, latitude and landmark of the sampling point in real time; the coordinates are saved with the data and can be uploaded to the cloud platform.

VI. Technical Parameters

Performance parameters

Physical parameters

Operating environment