Water purity data inaccuracies result from field kit testing of water pumps.
Water purity qualitative analysis determines the presence or absence and amounts of chemicals and their mixtures in water. This type of measurement requires field kits for testing water facilities, including varieties of pumping stations. General disadvantages include inaccuracies in data, limitations of single-factor testing measuring chlorine levels in pools and spas, and further drawbacks of measuring multiple aspects of water purity at sites including factories and metropolitan facilities.
General Disadvantages
Qualitative field-type water monitoring doesn't test global WFD 33 water criteria.
Disadvantages of field qualitative testing kits include an inability for reproducing statistics. Field location wind, rain, noise and temperature add to the inherent disadvantages of this qualitative field-type water monitoring. In addition, according to expert Neil Grant of Kennet Water Components, field kits cannot test the global Water Framework Directive (WFD 33), outlining 33 chemically polluting substances in water like chloride, nickel and benzene, set by the European Commission.
Spas, Pools and Tap Water
Site applications of pool water to test strips determine water purity.
Applying site water to test strips, mixing water with biological powders in vials, or testing water with a digital probe exemplifies testing of spa, pool and tap water purity. Both strips and vials change color to indicate if the water purity meets safe levels, while the probe gives the same read-out data. The test results provide low to moderate accuracy in measuring amounts of chlorine, bacteria and acidity (pH levels) that affect water purity.
Photometer Drawbacks
Incorporating the photometer qualitative water purity field test can result in drawbacks from moderate measurement accuracy for multiple types of water purity statistics. Used in municipal, industrial and residential water systems to test variables affecting water purity for human consumption and use, as well as monitoring water purity for healthy ecosystems of other living organisms, photometers measure temperature, pH levels and desalination (salt control) compounds.
Chemistry-Type Tests
A chemistry-based qualitative water purity test drawback is that it measures only dissolved iron.
Using chemistry-based field-testing to gather qualitative water-purity data gives incomplete statistical outcomes, similar to the pH colorimetric qualitative testing. Operating at a neutral pH, chemistry-based testing, like colorimetric tests, measures particular aspects of inorganic substances in water, rather than all its characteristics. As an example, at neutral pH, both these tests measure dissolved iron amounts, but not iron particles. In addition, ammonia levels from biological decay compromise qualitative measurements using chemistry-based field testing of nutrients in wastewater.
Tags: water purity, testing water, dissolved iron, field kits, field testing, field-type water
