pH Paper vs pH Meter

The measure of pH is how acidic or basic a solution is. The measure of pH plays a role in determining what can be dissolved in a given solution, as well as how well the solution is suited for living organisms. Both pH meters and pH papers are useful tools for determining the pH of a solution.

Usage of Paper

• To use pH paper, dip it into the solution being tested. Wait for a color change. Compare the color of the paper to the key provided with the paper to determine the pH range of the solution.

Usage of Meters

• Properly calibrate the pH meter, and then place it into the solution being tested. The digital readout on the pH meter will display the pH of the solution.

Cost Differences

• The cost of pH paper is low. in fact, it can be purchased for under ten dollars. A high quality pH meter used in a medical laboratory can cost hundreds of dollars.

Accuracy

• The outcome of pH paper gives an approximate pH range of a solution. A good quality pH meter that is properly calibrated can give a very accurate pH reading.

Fun Fact

• A great deal of pH paper products are commonly used to check the acidity of soil to help determine which plants will grow best.