Even though there is a wide variety of different photometric devices in the industry today, the basic concept or principle used in measurement are the same. Therefore, when someone has the responsibility of testing the actual quality of the water that people drink and use, the will still find the compounds contained in each cannot be seen by the human eye. However, when these instruments are introduced into the process, they can be seen visibility.

For instance, a water quality analysis gives the person test that they can use to provide them with the information that they need. In these cases, the results can be found when a reagent in a chemical turns colors. The color that is indicated will determine a number of different factors. Some of the more notable involves the higher greater concentration of ions being an indicator of deeper colorations. Therefore, when any of these instruments are used, they may present the results needed by changing or converting the color that is seen into a numerical value. In order for this information to be accurate, however, light is always required. Further, knowing what to look for in these measurements does not have to be difficult if the user is familiar with what different measurements mean. For instance,when the light is white light, the user will normally find that numerous wavelengths of light are meant to interact to different colors.

When an individual is in the midst of deciding what type of device to measure light, they may not know which type is actually better. So, the information listed below can help to clear up any confusion and the distinctions between each, the colormeters and the photo meters. With that said, here is a brief overview each.