The water quality testing kit is used to test for dissolved oxygen.
The water quality testing kit measures various compounds in the water such as the amount of dissolved oxygen and also the presence of heavy metals. A high heavy metal concentration in water makes it of low quality and unsafe for use.
A lower dissolved oxygen concentration means quality is low and vice versa.It is as a result of other unknown compounds present which depletes the oxygen in water. Water should have an ideal dissolved oxygen concentration of 6.5-8 mg/L.
Read more on https://brainly.com/question/18664467
