Environmental Engineering Calculators

Chemical Oxygen Demand

Chemical Oxygen Demand (COD)

In environmental chemistry, the chemical oxygen demand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured solution.

Chemical Oxygen Demand Calculator

Biochemical Oxygen Demand

Biochemical Oxygen Demand (BOD)

To determine Aggregate Organic Constituents test of drinking water & waste water for Biochemical Oxygen Demand.

Principle: Biological oxygen demand is defined as the amount of oxygen required bacteria in decomposing organic material in a sample under aerobic condition at 20 °C over a period of 5 days.

Biochemical Oxygen Demand Calculator

Ammonical Nitrogen Measurement Calculator

Ammonical Nitrogen Measurement

Ammoniacal nitrogen (NH3-N) is a measure for the amount of ammonia, a toxic pollutant often found in landfill leachate and in waste products, such as sewage, liquid manure and other liquid organic waste products.

Ammonical Nitrogen Measurement Test