* Water activity meter portable can be used to measure the water activity of food. It weighs only 100 grams, and the accuracy can reach ±0.02 aw * Water activity mainly reflects the amount of water in the food under equilibrium state, and determines the chemical, enzymatic and physical changes of food quality changes * Water activity can be measured in 5 minutes, the sensor and reading are integrated, and water activity and sample temperature are displayed together * portable water acivity monitor has automatic shutdown, manual shutdown and undervoltage alarm indication functions * food water activity meter can measure the water activity of bread, biscuits, pastries/puffed/baked foods, snacks, dehydrated foods