WHAT IS pH?
pH is a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral. pH of less than 7 indicates acidity, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water. Water that has more free hydrogen ions is acidic, whereas water that has more free hydroxyl ions is basic. Since pH can be affected by chemicals in the water, pH is an important indicator of water that is changing chemically. pH is reported in "logarithmic units". Each number represents a 10-fold change in the acidity/basicity of the water. Water with a pH of five is ten times more acidic than water having a pH of six.
IMPORTANCE OF pH
The pH of water determines the solubility (amount that can be dissolved in the water) and biological availability (amount that can be utilized by aquatic life) of chemical constituents such as nutrients (phosphorus, nitrogen, and carbon) and heavy metals (lead, copper, cadmium, etc.). For example, in addition to affecting how much and what form of phosphorus is most abundant in the water, pH also determines whether aquatic life can use it. In the case of heavy metals, the degree to which they are soluble determines their toxicity. Metals tend to be more toxic at lower pH because they are more soluble.
RO IN MAINTAINING pH
The transport of hydronium and hydroxide ions through reverse osmosis membranes constitutes a unique case of ionic species characterized by uncommonly high permeability. Combined with electro migration, this leads to complex behaviour of permeate pH, e.g., negative rejection, as often observed for monovalent ions in Nano filtration of salt mixtures.
Reverse osmosis is a water filtration method that removes toxins, microbes, debris, lead, and minerals from tap water. Not only is the pH of reverse osmosis water in the healthy range of 5 – 7, RO water treatment provides the highest quality and best tasting drinking water.
As far as health is concerned, RO water could potentially save you and your family from health issues and concerns that come from drinking unfiltered water year after year. For example, excess levels of lead can lead to increased blood pressure, fertility issues, brain damage, and more which can be avoided with our certified reverse osmosis systems.
In order to obtain an accurate pH reading, you will need to use a good digital pH meter to test the water’s pH. Please do not use test strips or pH paper, for pH testing RO water. Test strips can be off by a full point or more when testing RO water because the water is so pure. They are notoriously inaccurate for pH testing even on higher TDS municipal water. City water will always measure an alkaline pH. Municipalities will not allow an acidic water to flow through the infrastructure as this will result in accelerated erosion, leaching of metals, costly repairs, leaks and lots of lawsuits.