You don't. There are many factors that affect water quality that are not apparent by appearance alone.
A quality parameter is a measuring device used to measure rivers, lakes, and ground water. This device can measure the way these bodies of water change.
suggest measure to quality of water collected through rain water harvesting
...perhaps, the appearance. ;-0
Product capability, longevity, quality, employee training, and appearance.
BLER is a good measure of CD quality, but it's very subjective.
cheap and gaudy in appearance or quality
Fisher's appearance is a gel like lens. The lens are water plastic.
The hypothesis of water purification and quality would typically involve predicting that a specific water purification method or treatment process will effectively remove contaminants and impurities, resulting in improved water quality that meets regulatory standards and is safe for human consumption. Testing this hypothesis would involve conducting experiments or assessments to measure the effectiveness of the purification method in achieving these goals.
the answer is water
Water quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose.
VENEER
color