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For a long time, VELP has been manufacturing - mercury-free - BOD sensors for the determination of Biochemical Oxygen Demand, which work on the principle of electronic pressure measurement, and cooled incubators suitable for incubating these samples. The BOD Standard 5210 D method, requires the incubation of waters in 500 ml glass containers at 20°C.
The BOD sensors screwed onto the bottles measure and register the change in pressure in the sealed bottles. Reading the pressure at regular intervals, e.g. according to the five-day (BOD5) method, the incubation and reading of the sensors must be done for five days. From this, the BOD value can be calculated, which is indicated directly by the VELP devices. The display is in mg/l (ppm).
VELP's traditional BOD measuring devices store a data every 24 hours, so the incubation can continue for 5 days (even on the weekend), and the reading can be taken even after that.
VELP BOD RESPIROMETRIC sensors contain a significant innovation. The devices communicate wirelessly with a data collector located outside the incubator, so the samples do not need to be taken out of the incubator to read the data.
VELP respirometric sensors are available for soil testing, Biochemical Methane Potential (BMP) and biodegradability of plastics.
More detailsThe process is fully automatic, the samples are not exposed to temperature fluctuations caused by opening the door. Automatic operation has a good effect on the result, and the operator is freed from monotonous work.
The data collection unit can be programmed and read on a computer with the accompanying software.
In various designs: clamp, threaded, quick connector
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