# Soil pH Meter in Bangladesh

Soil pH Meter in Bangladesh is an instrument used to measure acidity or alkalinity of a solution – also know as pH. pH is the unit of measure that describes the degree of acidity or alkalinity. It is measured on a scale of 0 to 14. Soil pH Meter in Bangladesh

The quantitative information provided by the pH value expresses the degree of the activity of an acid or base in terms of hydrogen ion activity. The pH value of a substance is directly related to the ratio of the hydrogen ion [H+] and the hydroxyl ion [OH-] concentrations. Soil pH Meter in Bangladesh So so so so so so. So so so so so so

If the H+ concentration is greater than OH-, the material is acidic; i.e., the pH value is less than 7. If the OH- concentration is greater than H+, the material is basic, with a pH value greater than 7. So so so so so so. So so so so so so

If equal amounts of H+ and OH- ions are present, the material is neutral, with a pH of 7. Acids and bases have free hydrogen and hydroxyl ions, respectively. The relationship between hydrogen ions and hydroxyl ions in a given solution is constant for a given set of conditions, either one can be determined by knowing the other. So so so so so so. So so so so so so

##### WHAT DOES THE TERM “PH” MEAN? So so so so so so. So so so so so so

The term pH is derived from “p,” the mathematical symbol for negative logarithm, and “H,” the chemical symbol for Hydrogen. So so so so so so. So so so so so so

More accurate pH measurements are obtained with a pH meter. A pH measurement system consists of three parts: a pH measuring electrode, a reference electrode, and a high input impedance meter. So so so so so so. So so so so so so

The pH electrode can be thought of as a battery, with a voltage that varies with the pH of the measured solution. So so so so so so. So so so so so so

The pH measuring electrode is a hydrogen ion sensitive glass bulb, with a millivolt output that varies with the changes in the relative hydrogen ion concentration inside and outside of the bulb. The reference electrode output does not vary with the activity of the hydrogen ion. So so so so so so. So so so so so so

Showing the single result