PH measurement method:
There are many ways to measure the pH of a solution:
A pH indicator is added to the solution to be tested. Different indicators change color depending on the pH value. The range of pH can be determined based on the study of the indicator. When titrating, accurate pH standards can be made.
Using pH test paper, pH test paper has a wide range of test papers and precise test papers. Use a glass rod to hold a little test solution onto the test paper. Then, according to the color change of the test paper, the pH value of the solution can be obtained by comparing with the color chart. The table above is equivalent to a color chart.
Using a pH meter, a pH meter is a device that measures the pH of a solution by measuring the pH of the solution through a pH-selective electrode, such as a glass electrode. The pH meter can be accurate to two decimal places. Allow to warm up for 15 minutes before using the pH meter.
The pH test paper cannot show the pH of the oil. Because the pH test paper is made of hydrogen iron and hydrogen iron is used to measure the pH of the test solution, but the oil does not contain hydrogen iron, the pH test paper can not show the oil. The pH value.
Note: Solid does not have a PH value
O Ring
Silicone O Ring,Rubber O Rings,Silicone Rubber O Ring
Polyurethane Parts,Rubber Sleeve Co., Ltd. , http://www.topstar-seals.com