HM-B400 Multifunctional Portable Water Quality Detector

Product Introduction

The HM-B400 Multifunctional Portable Water Quality Detector combines multi-wavelength spectrophotometric water quality analysis with anodic stripping voltammetry for trace heavy-metal detection in a single portable platform. The spectrophotometric module uses a 420–860 nm LED light source system with pre-configured analytical wavelengths matched to national standard methods, enabling direct calculation of COD, total phosphorus, total nitrogen, ammonia nitrogen, and 45 additional parameters from the 49-item test library. The voltammetric heavy-metal module employs anodic stripping voltammetry — applying a negative voltage to enrich metal ions on the working electrode surface, then reversing the scan to produce characteristic stripping peaks for qualitative and quantitative analysis. This method offers sensitivity far superior to traditional colorimetric or X-ray fluorescence approaches, achieving 0.5 ppb detection limits for cadmium and lead in water samples. The instrument uses disposable screen-printed electrodes that eliminate polishing and cross-contamination, with a magnetic elastic-contact electrode holder for convenient replacement. Single heavy-metal sample testing completes within 20 minutes with real-time stripping voltammogram display. For applications also requiring biological toxicity and ATP testing, the HM-B500 full-configuration model integrates all four detection modules on the same platform.

Applications / Testing Items

• Conventional water quality parameter testing: COD, total nitrogen, total phosphorus, ammonia nitrogen, turbidity
• Trace heavy-metal detection in water samples: cadmium (Cd), lead (Pb) at ppb level
• Heavy-metal analysis in grain samples: cadmium and lead at mg/kg level
• Industrial wastewater discharge compliance verification
• Surface water heavy-metal contamination risk assessment
• Laboratory routine analysis and field comparative testing
• On-site rapid screening at rivers, lakes, and discharge outlets

Functional Performance / Features

1. Android 10 operating system with 15.6-inch color touchscreen for integrated operation
2. Two-in-one platform: conventional water quality detection and voltammetric heavy-metal detection
3. Anodic stripping voltammetry achieves sensitivity far exceeding traditional colorimetric or X-ray fluorescence methods
4. Disposable screen-printed electrodes — ready-to-use without polishing, no cross-contamination, environmentally friendly
5. Magnetic elastic-contact electrode holder enables convenient electrode replacement without abrasion, ensuring stable connection
6. Single heavy-metal sample testing completes within 20 minutes with real-time stripping voltammogram display
7. Multi-wavelength LED light source (420–860 nm) with pre-configured wavelengths per national standards
8. Built-in 4-position digester and 4-position cooling fan with independent control for parallel operation
9. Detection, digestion, and cooling run simultaneously for improved throughput
10. Local storage of 800,000 records with built-in thermal printer for instant printout
11. Wi-Fi connectivity for remote firmware upgrade and wireless data upload to platform client
12. USB Excel export and built-in 6,000 mAh lithium battery for field deployment

Main Parameters

Technical Parameters

Voltammetric Heavy-Metal Detection Module

Physical Parameters

• Previous: HM-B300 Multifunctional Portable Water Quality Detector
• Next: HM-B500 Multifunctional Portable Water Quality Detector