คุณลักษณะ

• Soak the test paper in the sample liquid and remove immediately to compare with the color chart to read the pH value.
• Since the launch of Micro Essential Laboratory (MEL) in 1934, we have gained experience with the dyes used, and our efforts to expand the range of pH measurements have paid off. We have established the Hydrion brand, and MEL's quality is now the standard due to its quality, accuracy, and reliability.
• In case of unknown samples, it is recommended to measure the pH value beforehand for safety.
• Roll type that allows you to freely determine the length of the test paper.