Historically, water testing regulations were stringent but not precise enough to yield accurate results. This was until the platinum cobalt method was developed in 1892 by a chemist named Allen Hazen, which helped to enhance the precision and standards of water testing. This blog post will look at the step-by-step process of the platinum cobalt method used for water testing.
A Brief History of Water Testing
When carrying out water testing, the color of the water is often analyzed to deduce the level of contamination and determine the overall quality of the water.
Previously, water and wastewater were evaluated against a grading called water-white, in which scientists analyzed the turbidity of water that appeared to be clear. This technique was inaccurate and built upon over