Biological Oxygen Demand (BOD) bottles are the main apparatus used in a BOD test, a test that measures the amount of oxygen used by aerobic microorganisms to break down organic matter. DWK BOD bottles are specifically designed to prevent unwanted oxygen from entering the sample during the BOD testing process.
- BOD bottles have a specially curved shoulder radius designed to minimize air during filling.
- BOD bottles have a flared mouth to prevent air entry during incubation.
- Stoppers have a tapered bottom to prevent air entrapment.
- BOD bottles are manufactured from borosilicate glass.
- Models utilizing darker glass are for light-sensitive samples.
Frequently Asked Questions
BOD bottles are specifically designed bottles that minimize contaminating air during sample filling and prevent air movement during incubation of a diluted water sample. This ensures no contaminating air interferes with the oxygen reading of the sample during the BOD testing process.
A BOD test measures the oxygen consumed by bacteria as they metabolize organic matter over a given period of time and at a specified temperature. The test is often used in wastewater management as a water quality indicator.
To properly use a BOD bottle for sample collection:
- Make sure to understand how to properly collect a sample for a given water source, including streams, lakes, sewage treatment plants, etc.
- Carefully collect or add the sample to the BOD bottle making sure that the sample fills to the top of the bottle.
- Cap the bottle and inspect it for air bubbles. If you see an air bubble, pour out the sample and try again.