Water Biological Toxicity Detector

I. Product Overview

The instrument is based on bioluminescence sensing technology and the principle of enzyme-catalysed chemiluminescence. Two detection methods are integrated to provide qualitative and quantitative determination of the overall toxicity of environmental samples. The independently developed automatic lifting detection structure overcomes the influence of strong light on the testing process and greatly reduces testing costs. It can be used for on-site determination of the overall toxicity of heavy metals, poisons, nerve agents, pesticide formulations and similar substances in water.

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 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

IV. Applications

Biological contamination, toxic chemicals, toxic and hazardous waste, municipal drainage, rainwater testing, drilling fluid and mud testing, mining, wastewater, soil and water body testing, industrial wastewater discharge testing, process water testing, seawater testing, medical and pharmaceutical product testing, food packaging testing, personal care and household chemical testing, sediment testing, rainwater runoff testing, solid sample testing and food processing water testing.

V. Key Features

1. Complies with the national standard (GB/T 15441-1995) and the international standard (ISO 11348-3).

2. A biological early warning system sensitive to more than 3,000 toxic compounds.

3. Results within 15 minutes of sample preparation — fast, reliable and reproducible.

4. Results correlate closely with other traditional toxicity analysis methods; suitable for emergency water pollution testing and for real-time verification that discharges comply with local regulations and emission standards.

5. Android smart operating system — more intelligent and more user-friendly.

6. ★Automatic lifting detection device with a dark chamber, solving the industry problem of strong-light interference during open-lid testing; for the same amount of bacteria, this instrument saves five times the consumable cost.

7. ★One instrument, two detection modes: bacterial biotoxicity testing (quantitative) and chemiluminescence biotoxicity testing (qualitative).

8. Portable PVC engineering case design for on-site testing.

9. 7-inch large touch screen, removing the need for cumbersome key operation.

10. Silicon photomultiplier for greatly improved detection sensitivity.

11. RJ45, Wi-Fi, 4G and Bluetooth connectivity for wireless transmission to relevant monitoring and supervision platforms, meeting the real-time data requirements of regulatory authorities.

12. Built-in 6,000 mAh lithium battery pack supports more than 8 hours of continuous operation when external power is unavailable.

13. One curve holds 20 concentration points, each of which can be individually included in or excluded from the curve calculation, with no manual recording, ensuring greater accuracy (more points can be customised).

14. Built-in ROM ≥ 4 GB, storing more than 80,000 results.

15. USB interface for convenient data reading and export, with results exported as Excel tables.

16. Built-in Pinyin input method for editing Chinese and English information.

17. High-speed thermal printer automatically prints a test report on completion, with a QR code for scanning and traceability.

18. Built-in operation demonstration videos that play automatically from the main screen.

19. Test history query by start and end time for precise and convenient retrieval of past data.

20. Cloud data management platform for permanent storage of results and short- and long-term analysis and assisted management.

21. Optional BeiDou satellite positioning shows the field test location in real time and can print and store the position information.

VI. Technical Parameters