What is the correct method for checking sanitizer pH?

The correct method for checking sanitizer pH is by using a test strip. Test strips are designed to give a quick, visual indication of the pH level of sanitizing solutions. This method is particularly useful in food safety practices because it allows for immediate assessment of whether a sanitizer is within the proper pH range to be effective in killing pathogens.

Using a thermometer is not relevant for pH measurement, as it only measures temperature, while a hydrometer measures the specific gravity of liquids, which does not provide pH information. A digital pH meter, although an accurate tool for determining pH levels, is typically used in laboratory settings and requires calibration and maintenance that may not be practical in a fast-paced food service environment. Therefore, the convenience and effectiveness of test strips make them the preferred choice for checking sanitizer pH in food safety practices.