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Agriculture, forestry, animal husbandry and fishery, industrial and mining enterprises, municipal engineering,hydrology
and water conservancy, scientific research institutions, real estate and construction industry, etc
Enzyme substrate method: the culture medium used in this system can generate colored compounds with the specific enzyme, and then conduct continuous spectrophotometric determination. According to the chroma change of the water sample to be measured and the relationship between the chroma change and the number of coliform bacteria in the water, the coliform bacteria concentration can be obtained by establishing the relevant mathematical model.
Reference standard:
Microbiological indicators of standard test methods for drinking water (GBJ / T 5750.12-2006)
Determination of fecal coliform in water quality (HJ / T 347-2007)
Application scope:
Drinking water source
Automatic monitoring station of surface water quality
Outlet of sewage treatment plant, etc
♦ It is easy to operate, meets the requirements of unattended online continuous monitoring, and can upload the test data results remotely. ♦ The volume of water sample is 100ml, and the lowest detection rate of one sample per 100ml can be achieved.
♦ Compared with the laboratory method, the relative error should be less than 35%.
♦ The output results of field test can solve the problem that the microbial characteristics are easy to change in the process of water sample collection and transportation, and ensure the accuracy of data results.
♦ According to the characteristics of the actual water samples, the portable calibration module (according to the national standard method) can be used for on-site calibration. To reduce the detection error caused by the difference between laboratory strains and environmental strains.
♦ The built-in turbidity correction function can reduce the impact of turbidity increase on the detection results in the microbial culture process.
♦ The concentration range of test water sample is wide to avoid all positive results.
♦ Automatic pipeline disinfection and cleaning, eliminate water sample cross interference.
♦ It is equipped with microcomputer communication structure and has networking function with DCS of manufacturer and local environmental protection government departments.
♦ Detection parameters: total coliform, thermophilic (fecal) coliform and Escherichia coli
♦ Detection method: enzyme substrate method
♦ Sampling volume: 100ml
♦ Detection time: less than 12 hours ♦ Measurement range: 1 / 100ml – 1.0 × 109 / 100 ml
♦ Detection limit: 1 / 100ml
♦ Culture temperature: 44.5 ℃ ± 1 ℃ (thermophilic (fecal) coliform and Escherichia coli)
36.5℃ ± 1 ℃ (total coliform)
♦ Reagent: culture medium sodium hypochlorite
♦ Zero point correction: before each measurement
♦ Pipeline cleaning: before and after each measurement
♦ Pipeline disinfection: before and after each measurement
♦ Alarm signal: temperature alarm, instrument fault alarm, etc
♦ Communication interface: RS232 / RS485
♦ Power supply: 220 VAC, 50 Hz
♦ Power consumption: 200W
♦ Environment: moistureproof, dustproof, temperature 10-30 ℃
♦ Overall dimension: 420mm × 520mm × 1750 mm long × wide × (high)
♦ Weight: 60kg
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