1Equipment Overview

Equipment Name: Portable Water Quality Testing Box

Manufacturer: Changsha Jinghe Environmental Protection Technology Co., Ltd

model: QW-9

2.Test project:
Free residual chlorine, chlorine dioxide, total chlorine (total residual chlorine) pH、 Turbidity, chromaticity, oxygen consumption, total bacterial count, total coliform bacteria and other indicators.

3Instrument configuration method:
Adopting a modular configuration, the core testing instruments are placed in the same matching hard portable box, which can be carried to the site and the testing items fully comply with the national standard methods;

4.Multi parameter water quality analyzer:

4.1. Test items: free residual chlorine, chlorine dioxide, total chlorine (total residual chlorine) pH、 Turbidity, chromaticity, oxygen consumption;

4.2. Instrument repeatability: ± 0.003A;
4.3. Detection wavelengths: 380nm, 420nm, 520nm, 610nm, white light, etc., automatically switch wavelengths based on the test items;
4.4. Optical structure: 90 ° scattering method combined with transmitted light is used to detect turbidity, with a detection accuracy of 0.001NTU, meeting the requirements of drinking water detection;

4.5. Data storage: More than 1500 sets can be accessed at any time, and the stored information includes: date and time, user ID, water sample type, water sample number, water sample source, etc;

4.6. Screen display: Screen larger than 4.5 inches
4.7. Operating environment: 0-50 ℃; 0-90% relative humidity (non condensing);
4.8. Calibration: The light source has been calibrated at the factory and has a stable service life of seven years. During this period, custom calibration is supported;
4.9. Portable, with multiple power supply modes, using rechargeable batteries, USB power supply, or power adapter/portable power supply;

4.10. The instrument is equipped with an 8000ma large capacity rechargeable lithium polymer battery, with an ultra long standby time and power and working status indicator lights, making it convenient for long-term field operation without the need for dry batteries and without polluting the environment;

4.11. Work status indicator light, convenient for long-term field operation, no need for dry batteries, and does not pollute the environment;

4.12. Equipped with automatic power monitoring and working indicator lights, the instrument's operating status can be monitored at any time;

4.13. Calibration: The light source has been calibrated at the factory and has a stable service life of seven years. During this period, custom calibration is supported

4.14. All reagents used are prefabricated and do not require on-site preparation;

5Microbial detection component:

5.1. Detectable items: total bacterial count, total coliform group, etc
5.2 Portable CNC constant temperature incubator: temperature control range 5-50 ℃, temperature control accuracy ± 0.5 ℃;
5.3. Power supply mode, external power supply;
5.4. Automatic vacuum pump and filtration kit, capable of using 45 μ m pore size filter membrane to quickly perform water sample vacuum filtration on site and complete microbial sample collection;
5.5. Prefabricated sterile microbial product culture medium;
5.6. The filter is heat-resistant and can be directly sterilized on site;
5.7. Completely sterile configuration using the national standard method, using pre sterilized sterile culture medium, sterile sampling bags, sterile culture dishes, and sterile straws, which can be used immediately without the tedious sterilization process;
6.Portable turbidity meter

6.1 Testing item: Turbidity

6.2 Testing method: Ratio measurement technique -90 degree scattered light and transmitted light

6.3 Measurement range: Turbidity: 0-1000NTU

6.4 Resolution:

0.00—9.99NTU 0.01NTU

10.0—99.9NTU 0.1NTU

100—1000NTU 1NTU

6.5 Accuracy: Between 0-1000NTU, the accuracy is ± 2% of the reading plus stray light;

6.6 Stray light: ≤ 0.02NTU；

6.7 Automatically identify high and low ranges and directly display concentration results;

6.8 Easy to operate and convenient to use, after zeroing, the measured substance can be directly determined by taking a water sample;

6.9 Solid state light-emitting devices are used as both light sources and monochromators. Compared with traditional spectroscopic systems, the optical system structure is simple, and the instrument has seismic and moisture resistance performance;

6.10 Integrated light source/monochromator, colorimetric tank, and sensor, without movable parts, and using pulse power supply. The service life of the light source can reach 100000 hours, greatly improving the accuracy, sensitivity, and reliability of the instrument;

6.11 OLED screen illumination display significantly reduces power consumption, even in low light conditions, without affecting observation;

6.12 has custom calibration function;

6.13 Operating environment: 0-50 ℃; 0-90% relative humidity (non condensing);

6.14 Portable, with graphic and textual display in the manual, easy to operate;

6.15 Interface: USB

6.16 Light source: LED cold light source, with a longer service life of the light source;

6.17 Power supply: USB power supply or 4 AA alkaline batteries power supply;

6.18 Lightweight, small in size, easy to carry, suitable for outdoor and laboratory use;

7.portablePHCONDUCTIVITY METER

7.1 Testing items: conductivity pH

7.2 Measurement range: Conductivity: 0-199.9uS/cm; pH：0.0-14.0

7.3 Resolution: Conductivity: 0.1uS/cm; pH：0.1

7.4 Measurement accuracy: Conductivity: 0.1uS/cm; pH：±0.1

7.5 Humidity compensation: 0-50 ℃

7.6 Working humidity: 0-50 ℃