HM-BL04 Portable COD/Ammonia/TP/TN Analyzer

Product Introduction

The HM-BL04 is a portable four-parameter water quality analyzer from HM Instruments, purpose-built for surface water quality assessment and eutrophication monitoring. Utilizing the spectrophotometric method with a three-wavelength LED system (420, 620, and 700 nm) and 0.001 Abs absorbance resolution, it simultaneously measures the four parameters most critical to nutrient pollution evaluation: COD (Chemical Oxygen Demand), ammonia nitrogen (NH3-N), total phosphorus (TP), and total nitrogen (TN). These four parameters constitute the standard analytical suite prescribed by GB 3838 and equivalent international standards for assessing surface water quality classification and trophic status.

The integrated digestion module enables complete on-site sample preparation for TP and TN protocols requiring high-temperature persulfate digestion, eliminating the need for auxiliary laboratory equipment. At 8.3 kg with AC 220V and lithium battery dual power supply, the HM-BL04 is designed for field deployment at rivers, lakes, reservoirs, and monitoring stations. 4G and Wi-Fi connectivity with GPS positioning and cloud platform integration deliver real-time data reporting, while the built-in thermal printer provides immediate hard-copy results. The HM-BL04 is the optimal solution for environmental monitoring agencies, water authority bureaus, and third-party testing organizations requiring comprehensive nutrient pollution assessment in a single portable instrument.

Applications

• Surface water quality assessment — comprehensive nutrient monitoring per GB 3838 for rivers, lakes, and reservoirs

• Eutrophication evaluation — simultaneous TP and TN measurement for trophic status classification

• Municipal wastewater treatment — influent load and effluent compliance across organic and nutrient parameters

• Industrial discharge monitoring — COD and nutrient salt compliance for chemical, pharmaceutical, and food processing facilities

• Drinking water source protection — nutrient loading surveillance at raw water intakes

• Environmental impact assessment — baseline and operational-phase water quality datasets for EIA submissions

• Agricultural non-point source pollution investigation — nitrogen and phosphorus runoff tracking

• Emergency water pollution incident response — rapid on-site four-parameter screening for organic and nutrient contamination

Functional Performance

1. Three-wavelength LED spectrophotometric system (420/620/700 nm) covering all four nutrient pollution parameters.

2. Complete parameter coverage: COD, NH3-N, TP, TN — the standard suite for surface water quality classification.

3. Integrated digestion module for complete on-site TP and TN persulfate digestion without external equipment.

4. 4G and Wi-Fi wireless connectivity for real-time cloud platform data upload.

5. Built-in GPS positioning for geotagging every measurement record.

6. Thermal printer for immediate on-site result documentation.

7. 0.001 Abs absorbance resolution for precise low-concentration detection across all parameters.

8. AC 220V and lithium battery dual power supply for both laboratory and field deployment.

9. Cloud platform integration enabling remote data access, compliance report generation, and threshold exceedance alerts.

10. Compact 430 × 350 × 190 mm enclosure at 8.3 kg — portable for field campaigns.

Main Parameters

Technical Parameters

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