Portable Biological Toxicity Detector

I. Product Overview

The portable biotoxicity analyser integrates biotoxicity testing, thermostatic incubation and storage, dual-channel ATP testing, kinetic analysis and information management. It is designed for both accurate laboratory analysis and on-site emergency monitoring. Based on bioluminescence sensing technology and the principle of enzyme-catalysed chemiluminescence, two detection schemes are integrated to provide qualitative and quantitative determination of the overall toxicity of environmental samples.

II. Measuring Principle

Bacterial method: luminescent bacteria emit visible light continuously during normal metabolism, and light intensity is positively correlated with bacterial metabolic activity. When toxic substances are present in the sample, bacterial metabolism is inhibited and light intensity decreases. The stronger the toxicity of the sample, the greater the decrease in light intensity — a good negative correlation.

Chemiluminescence method: based on the principle of horseradish peroxidase-catalysed chemiluminescence, this method enables rapid qualitative determination of toxic substances in water. Toxic substances inhibit enzyme activity and reduce the light intensity of the system; the inhibition rate is calculated from the ratio of the sample light intensity to the blank light intensity to judge the level of water toxicity.

III. Applicable Standards

1. GB/T 15441-1995 Water quality — Determination of the acute toxicity — Luminescent bacteria test

2. ISO 11348-3:2007 Water quality — Determination of the inhibitory effect of water samples on the light emission of Vibrio fischeri (luminescent bacteria test) — Part 3: Method using freeze-dried bacteria

3. JJF 2203-2025 Calibration specification for water quality toxicity analysers

IV. Applications

1. Determination of the acute toxicity of pure compounds, including organic molecules and inorganic metal ions.

2. Determination of the acute toxicity of contaminated water bodies, including industrial discharge, mining and smelting wastewater and river systems.

3. Determination of the acute toxicity of contaminated soil and of river and coastal sediments.

4. Study of the interactions between toxic elements and compounds — synergistic or antagonistic effects.

5. Chemiluminescence analysis of chronic responses and similar applications.

V. Key Features

1. ★Android 10 system with a 7-inch colour touch screen and integrated operation.

2. ★Integrated thermostatic incubation module, thermostatic detection module, thermostatic storage module, digital information module, BDS positioning module, Wi-Fi module and camera module (optional) for multi-function integration.

3. ★Three detection modes: bacterial biotoxicity testing (quantitative), chemiluminescence biotoxicity testing (qualitative) and dual-channel ATP testing.

4. ★24 thermostatic sample incubation positions.

5. ★Kinetic detection function for monitoring the kinetic process of toxicity inhibition.

6. BDS positioning supported.

7. Storage capacity of 800,000 results; results can be printed in batches and uploaded quickly via Wi-Fi.

8. Results are exported as Excel tables and can be copied directly to a USB flash drive.

9. Built-in new-generation high-speed thermal printer for real-time printing of results.

10. Supports field testing with a built-in 30,000 mAh lithium battery, battery management and charging indication, and up to 8 hours of standby time.

VI. Technical Parameters