These devices are small strips designed to quickly and easily measure the concentration of sanitizing solutions, typically those based on chlorine or quaternary ammonium compounds. They provide a visual indication of the solution’s strength, using a color change that corresponds to a specific range of parts per million (ppm) of the sanitizer. For example, a strip dipped into a chlorine solution will change color, and the resulting hue is then compared to a color chart on the packaging to determine the chlorine concentration.
The use of these indicators is crucial in environments where proper sanitation is paramount, such as food service, healthcare, and manufacturing. Maintaining correct sanitizer levels ensures effective disinfection and helps prevent the spread of harmful bacteria and viruses. Historically, relying on visual estimations or less precise methods led to inconsistencies in sanitization practices. The introduction of these testing aids offered a more reliable and readily accessible method for verifying solution efficacy, leading to improved hygiene standards and safety.
