ATP readings refer to the measurement of adenosine triphosphate (ATP) levels in a given environment or sample. ATP is a molecule that serves as a universal energy currency in all living cells and is crucial for various cellular processes. ATP readings can provide valuable information about the overall microbial activity, cleanliness, and hygiene levels in a particular setting, such as food production facilities, healthcare settings, or environmental samples. High ATP levels may indicate the presence of organic matter or microbial contamination, while low levels may suggest effective cleaning practices or low microbial activity. ATP readings are commonly used in industries such as food safety, healthcare, and environmental monitoring to assess and maintain cleanliness and sanitation standards.