HM-B400 Portable Water Quality Detector for Heavy Metal Analysis HM-B400

Product Introduction

Heavy-metal contamination in water bodies poses long-term risks to ecosystems and public health, yet monitoring programs often face a practical dilemma: laboratory-grade instruments such as ICP-MS deliver the required sensitivity but require sample transport, trained operators, and extended turnaround times, while field colorimetric test kits sacrifice accuracy and quantification depth at trace levels. The HM-B400 Portable Water Quality Detector was developed to bridge this gap by bringing anodic stripping voltammetry — a technique with sensitivity comparable to laboratory instrumentation — into a field-deployable platform.

The instrument combines two analytical systems within a ruggedized carrying case. The spectrophotometric module uses a multi-wavelength LED light source (420–860 nm) with pre-configured analytical wavelengths matched to national standard methods, enabling direct quantification of COD, total phosphorus, total nitrogen, ammonia nitrogen, and 45 additional parameters. The voltammetric heavy-metal module employs anodic stripping voltammetry: metal ions in the sample are first enriched on the working electrode surface by applying a negative voltage, then re-oxidized during a reverse scan, producing characteristic stripping peaks whose potential identifies the element and whose current quantifies the concentration. This method achieves detection limits of 0.5 ppb for cadmium and lead in water and 0.01 mg/kg in grain samples — sensitivity far exceeding colorimetric or X-ray fluorescence approaches.

The electrode system uses disposable screen-printed electrodes that require no polishing and eliminate cross-contamination between samples, mounted on a magnetic elastic-contact holder for tool-free replacement. A complete single-sample heavy-metal test runs in 280 seconds per measurement, with the stripping voltammogram displayed in real time as the scan proceeds. The 15.6-inch Android touchscreen manages both modules through a unified interface, and data workflows include 800,000-record local storage, thermal printing, USB Excel export, and Wi-Fi upload to platform clients. For monitoring programs that also require biological toxicity and ATP hygiene testing, the HM-B500 full-configuration model adds both modules to the same voltammetric and spectrophotometric platform.

Applications

• Industrial wastewater compliance: On-site cadmium and lead screening at discharge outlets against regulatory limits, with simultaneous COD and nutrient parameter measurement from the same field visit.
• Surface water contamination assessment: Trace heavy-metal detection at river and lake monitoring cross-sections where contamination sources include mining, electroplating, or battery manufacturing upstream.
• Grain safety screening: Cadmium and lead analysis in grain samples at 0.01 mg/kg detection limits, supporting food safety monitoring programs.
• Emergency pollution incident response: Rapid on-site quantification of heavy-metal contamination following accidental discharge events, with results available within 20 minutes of sample preparation.
• Pretreatment process verification: Monitoring heavy-metal removal efficiency in wastewater treatment processes by comparing inlet and outlet concentrations.
• Laboratory comparative analysis: Bench-side verification of field voltammetric results against reference methods, using the same calibration curves and electrode parameters.
• Routine water quality parameter testing: 49 spectrophotometric parameters including COD, total nitrogen, total phosphorus, ammonia nitrogen, turbidity, and metal indicators.

Key Features & Advantages

1. Anodic stripping voltammetry achieves sensitivity far exceeding colorimetric or X-ray fluorescence methods, with 0.5 ppb detection limits for Cd and Pb in water
2. Disposable screen-printed electrodes eliminate polishing maintenance and cross-contamination between samples, supporting environmentally responsible operation
3. Magnetic elastic-contact electrode holder enables tool-free electrode replacement without mechanical wear, ensuring consistent electrical contact
4. Single heavy-metal sample test completes within 20 minutes with real-time stripping voltammogram display for immediate result verification
5. Dual analytical systems — spectrophotometric water quality and voltammetric heavy-metal — on one portable platform reduce total equipment and training investment
6. Multi-wavelength LED light source (420–860 nm) with pre-configured wavelengths matching national standard methods for all 49 water quality test items
7. Built-in 4-position digester with independent cooling fan control enables simultaneous digestion, cooling, and measurement for improved workflow throughput
8. Digestion temperature adjustable from room temperature to 200°C with ±0.5°C accuracy, heating to 165°C within 10 minutes
9. 15.6-inch Android touchscreen with unified interface across both modules simplifies operator training and reduces procedural errors
10. Local storage of 800,000 records consolidates spectrophotometric and voltammetric results in one system with consistent timestamps
11. Built-in thermal printer provides immediate field documentation for chain-of-custody requirements
12. Wi-Fi connectivity supports remote firmware upgrade and wireless data upload to centralized monitoring platforms
13. USB Excel export streamlines data transfer to laboratory information management systems for regulatory reporting
14. Built-in 6,000 mAh lithium battery with 3-hour standby supports extended field campaigns without external power
15. Ruggedized carrying case design with reinforced corners for transport to industrial discharge and remote sampling sites

Technical Specifications

Voltammetric Heavy-Metal Detection Module

Water Quality Detection Module

Environmental & Physical Parameters

FAQ

Article address:https://www.hmwatertesting.cn/dcsz2/water-quality-voltammetric-heavy-metal-analyzer.html