Ybotech BOD Meter (Biological Oxygen Demand Meter) instruments, probes, and sensors used to measure dissolved oxygen and temperature in water and other solutions; used to determine biological oxygen demand (BOD), an indication of the amount of biodegradable material in a sample.

Ybotech Chemical Oxygen Demand (COD) is defined as the amount of oxygen equivalents consumed in the chemical oxidation of organic matter by strong oxidant (e.g., potassium dichromate).  The COD value indicates the amount of oxygen which is needed for the oxidation of all organic substances in water in mg/l or g/m3.  Chemical oxygen demand (COD) is an indirect measurement of the amount of organic matter in a sample. With testing COD, you can measure virtually all organic compounds that can be digested by a digestion reagent.