From time to time by the end of the five-working day incubation period the dissolved oxygen level is zero. This is very true for rivers and streams with a lot of natural and organic pollution. Since It's not at all regarded once the zero position was achieved, it can be impossible to inform what the BOD stage is.Estimate the amount of sulfuric acid

The significant position is the fact that once you've established a mean COD:BOD ratio for your wastewater stream, then the fairly simple and speedy COD test can be utilized to predict BOD with relative dependability.Recognizing this problem in the business, we formulated a number of COD test kits that include a chloride extraction stage that assur