It is widely used to measure Cr-VI in water and waste water in different fields, such as education, research, drinking water treatment, waste water treatment, surface water, underground water, etc.

It is widely used to measure NH3-N in water and waste water in different fields, such as education, research, drinking water treatment, waste water treatment, surface water, underground water, etc.

It can be used to measure the chemical oxygen demand (COD) of water and waste water.