Handheld biological toxicity detector

Instrument Overview:

HM-DXS handheld biological toxicity detector is a new generation of biological acute toxicity analyzer for laboratory use. It is a toxicity detection system based on bioluminescent sensing technology. It performs qualitative detection based on the changes in the luminous intensity of luminous bacteria during metabolism. Compared with traditional fish, fleas and other aquatic organisms as biological detection methods, the luminescent bacteria method is simple, rapid, sensitive, and has strong adaptability, good repeatability, high accuracy, low cost, and wide application. It is a water quality toxicity rapid detection instrument designed for environmental pollution, emergency accidents, security inspections and routine inspections. It can be used for the overall toxicity detection of heavy metals, poisons, nerve agents, pesticide preparations and other substances in on-site water.

It complies with the national standard "GB/T15441-1995 Determination of acute toxicity of water quality-luminescent bacteria method" and international standards (ISO11348-3).

Application areas:

Handheld biological toxicity detectors are suitable for drinking water testing, emergency response-biological pollution, emergency response-toxic chemicals, toxic and hazardous waste, municipal drainage, rainwater testing, drilling fluid and mud testing, mining, wastewater, soil and water testing, industrial wastewater discharge testing, process water testing, seawater testing, medical/pharmaceutical product testing, food packaging testing, personal care products and household chemicals testing, sediment testing, rainwater runoff testing, solid sample testing, food processing water testing, etc.

Detection principle:

HM-DXS performs triple functions: toxicity testing, ATP testing and determination of microbial contamination; toxicity testing is performed using luminescent bacteria that exist in nature. This bacteria emits light during normal metabolism. If placed in a toxic environment, their cell respiration process is affected, resulting in a decrease in the amount of light emitted. The luminescence detector of the HM-DXS type measures the amount of light emitted by the luminescent bacteria before and after exposure to the toxic environment, and the degree of reduction in the amount of light corresponds to the strength of the toxicity.

Features:

1. Comply with national standards (GB/T154411995) and international standards (ISO11348-3);

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

3. Fast, reliable and reproducible analysis results: Results are obtained within 15 minutes after sample preparation;

4. A simple, fast and highly sensitive portable water quality detector, specially designed for screening acute toxicity and adenosine triphosphate (ATP);

5. Android smart operating system, smarter and more user-friendly;

6. Combined with ATP detection function, on-site quantitative calculation of ATP concentration, enhancing the anti-interference ability of water quality toxicity detector, one machine with multiple functions;

7. Portable handheld design, more convenient for on-site detection;

8. The detection sleeve adopts a plug-in flexible design, which can be cleaned regularly for long-term use to extend the life of the instrument;

9. The 3.5-inch true color touch screen eliminates the tedious operation of buttons and is more convenient;

10. The use of silicon photomultiplier tubes greatly improves Detection sensitivity;

11. With WIFI, mobile phone hotspot networking and Bluetooth transmission functions, it can realize wireless transmission to relevant monitoring and supervision platforms, realize real-time data, and better meet the scene requirements of the regulatory department;

12. The instrument has a built-in 3000mAH lithium battery pack, which can support continuous work for more than 4 hours in the case of external power failure or no power supply;

13. A curve can make tens of thousands of curve concentration points, and the curve concentration points can be added by yourself without manual recording, ensuring that the curve value is more accurate;

14. The ATP mode can set the upper and lower line values, and it is more convenient to judge the qualified rate of random inspection;

15. The instrument has a built-in ROM ≥ 4GB, and the data results can be stored for more than 80,000;

16. It has a USB communication interface for convenient data reading and export, and the export results are Excel tables;

17. Built-in Sogou input method, which can edit Chinese and English information;

18. Built-in web browser, Baidu can search for relevant literature after connecting to the Internet;

19. The standard mode has demonstration operation steps, which is convenient and fast, and easier to use hand;

20. Optional GPS positioning function, real-time display of detection location information, more convenient field measurement;

Parameter indicators:

Measurement mode: fast measurement mode, basic measurement mode, ATP measurement mode

Detector: silicon photomultiplier tube

Spectral range: 300-1100nm

ATP sensitivity: 10-15～10-18mol

Bacteria: Bright Photobacterium, Vibrio fischeri, Vibrio qinghaiensis, Photobacterium aujuxiangensis, etc.;

Method standard: GB/T15441-1995&ISO11348

Measurement range: 0~65535RLU (relative luminescence unit)

ATP detection limit: 9.4×10-15molATP, RLU indication is ≤2

ATP repeatability: When the instrument indication is about 100RLU, the relative standard deviation of repeated measurements is ≤2.3% (n=10)

ATP linear error: When the instrument indication is about 100RLU, the linear error of the measurement is ≥-3.6%

Toxicity test accuracy: The sample was repeated 3 times, and the relative deviation was less than 6%

Sensitivity: equivalent to or better than the acute biological toxicity test method for 96-hour culture of fish;

Toxicity test time: get the result within 15 minutes after sample preparation

ATP test time: get the result within 15 seconds after sample preparation

Display results: light suppression rate (﹪) relative luminescence (RLU) toxicity prompt (low toxicity, medium toxicity, severe toxicity, high toxicity, extremely toxicity) is displayed in accordance with national standards

System settings: upload address, sample name, tester, test location, contact number, etc. can be set by yourself

Background noise value: ≤6RLU (n=10)

Operating environment: storage temperature -10~50℃, working temperature +5~45℃

Relative humidity: 30-95% (25°C)

Data storage: more than 80,000 records

Communication: WIFI, hotspot, RS232, Bluetooth

Battery: 3000mAh lithium battery

Continuous working time: more than 6 hours

Charging voltage: 220V/5V

Dimensions: 188mm×77mm×37mm

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