The major difference between pH meter and conductivity meter is that the pH meter uses to measure the hydrogen ion concentration of a solution (pH) and conductivity meter used to determine the conductance (electric current) in a solution. The unit of conductance is Siemens/cm (S/cm), generally the more impurities in the sample solution, the higher the value of conductivity.
The pH and conductance, both are significant factors in various fields. These are generally classified as physical tests, although they generally, depending on the chemical characteristics of the sample or solution.
Both processes are quick and simple to perform and are usually done immediately after obtaining a sample. It is also used to check the stability of the compound; constant changes in these parameters indicate that the basic conditions are changing.
What is pH meter:
A pH meter is an electronic apparatus that determine hydrogen ion activity in solutions, or in other words, it measures the acidity or alkalinity of a solution. The pH meter is also referred to as a "potentiometric pH meter" as it detects the difference in electrical potential between a pH electrode and a reference electrode.
It consists of a special measuring probe (glass/combine electrode) connected to an electronic meter that displays the pH measurement in decimal form.
The pH scale is usually measured in the scale of pH 01 to 14. The value below the pH 07 considered as acidic and above 07 considered as a basic value. We determine pH using dyes or indicator solutions, pH papers, and pH meters.
But the indicator indicates that the solution is acidic or basic, pH paper gives a rough idea regarding the pH of the solution, but the pH meter gives an exact pH value of the sample. The pH meter consists of a glass/combine electrode, temperature sensor, display, and measurement keys.
What is conductivity meter:
A conductivity meter is an electronic device that measures the amount of electrical current or conductance in a solution. A conductivity meter consists of a conductivity cell or probe. A small electrical current runs between two electrodes that are set a certain distance by about one centimeter.
The conductance of a solution with a high concentration of ions is high, resulting in a rapid current. When there is a lower concentration of ions, the electrical current is slower and the reading is smaller.
A conductivity meter used to determine the amount of conductance or electric current in a solution. The current is carried almost whole by dissolved ions. The capacity of an ion to carry current is a function of its charge and its size or mass, hence more charged ions conduct more current and larger ions conduct less current. The conductivity meter consists of a conductance cell, temperature sensor, display, and measurement keys.
FAQ (Frequently Asked Questions):
What is the difference between pH and conductivity?
pH is a measurement of hydrogen ion concentration in a sample that is used to determine a compound's acidity or alkalinity, whereas electrical conductivity is a determination of the ions concentration present within a sample solution.
Is there a relationship between electrical conductivity and pH?
There is no relationship between the conductivity and pH, because pH is related to the number of hydrogen ions per molecule of an acid or base, while conductivity is dependent on free electrons. The presence of hydrogen ions in a substance will affect the pH level and, most likely, the conductivity levels.
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