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Product Details
Product Introduction
The HM-SDX is a handheld water toxicity detection instrument designed for rapid field screening of water quality threats using the luminescent bacteria bioluminescence inhibition method. When toxic substances contact luminescent bacteria (Vibrio fischeri, Photobacterium phosphoreum, Vibrio qinghaiensis), the bacterial light output decreases proportionally to toxicity concentration — the HM-SDX quantifies this inhibition to provide immediate qualitative toxicity assessment.
Measuring just 188×77×37mm, the HM-SDX brings laboratory-grade toxicity screening to field environments including water treatment plant patrols, emergency response situations, aquaculture monitoring, and environmental inspection operations. The 3500mAh rechargeable battery supports over 4 hours of continuous measurements without recharging.
The instrument offers three measurement modes in a single device: qualitative toxicity screening (luminescent bacteria inhibition), ATP bacteria counting (microbial contamination assessment), and combined screening mode. This multi-mode approach enables comprehensive water quality characterization from a single compact instrument, eliminating the need to carry separate devices for different analytical purposes.
Applications
Drinking water source rapid toxicity screening
Water treatment plant process monitoring and patrol testing
Environmental emergency response and contamination event assessment
Industrial wastewater discharge point spot checks
Aquaculture and fishery water quality daily monitoring
Swimming pool and recreational water safety testing
Distribution network integrity verification
Research field sampling and preliminary assessment
Functional Performance
Three-in-one measurement capability: qualitative toxicity + ATP bacteria count + combined screening in a single handheld device
15-minute rapid qualitative toxicity result using luminescent bacteria bioluminescence inhibition method per GB/T15441-1995
15-second ATP detection for real-time microbial contamination assessment
Pluggable removable washable test tubes reduce per-test consumable costs and eliminate cross-contamination risk
3.5-inch color touchscreen with intuitive graphical interface for clear result presentation in field conditions
Android intelligent operating system with user-friendly navigation and on-screen operation guidance
Wi-Fi, mobile hotspot, and Bluetooth connectivity for real-time data transmission to cloud monitoring platforms
SiPM (silicon photomultiplier) detector delivers enhanced sensitivity across 300–1100nm spectral range
Over 80,000 records storage capacity with USB data export in Excel format
Built-in 3500mAh lithium battery providing over 4 hours continuous operation and 10+ hours standby
ATP mode with configurable upper and lower threshold values for streamlined pass/fail determination
Main Parameters
| Parameter | Specification |
|---|---|
| Measurement Modes | Fast mode, Standard mode, ATP mode |
| Detector | Silicon photomultiplier (SiPM) |
| Spectral Range | 300–1100nm |
| Measurement Range | 0–999,999 RLU |
| ATP Sensitivity | 10⁻¹⁵ ~ 10⁻¹⁸ mol |
| Bacteria Strains | Photobacterium phosphoreum, Vibrio fischeri, Vibrio qinghaiensis |
| Method Standard | GB/T15441-1995 & ISO 11348-3 |
Technical Parameters
| Parameter | Specification |
|---|---|
| Inhibition Rate Range | -100% ~ 100% |
| Clear Water Luminescence Inhibition Rate | ≤ ±5% |
| ATP Detection Limit | 9.4×10⁻¹⁵ mol ATP, RLU ≤ 2 |
| ATP Repeatability | ≤ 2.3% RSD at ~100 RLU (n=10) |
| ATP Linear Error | ≥ -3.6% at ~100 RLU |
| Toxicity Test Accuracy | Relative deviation < 6% (3 replicates) |
| Sensitivity | Equivalent or superior to 96-hour fish acute toxicity test |
| Toxicity Test Time | Within 15 minutes after sample preparation |
| ATP Test Time | 15 seconds after sample preparation |
| Display Results | Inhibition rate (%), RLU, toxicity warning (low/toxic/heavy/high/highly toxic) |
| Background Noise | ≤ 6 RLU (n=10) |
| Data Storage | 80,000+ records |
| Communication | Wi-Fi, Mobile hotspot, USB, Bluetooth |
| Battery | 3500mAh lithium battery |
| Continuous Working Time | > 4 hours |
| Charging Voltage | 220V / 5V |
| Operating Temperature | +5 ~ +45°C |
| Storage Temperature | -10 ~ +50°C |
| Relative Humidity | 30–95% (25°C) |
| Instrument Dimensions | 188mm × 77mm × 37mm |
| Packaging Dimensions | 550mm × 245mm × 375mm |
| Package Weight | 6kg |
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