Often abbreviated as Aw, it is a measurement of the amount of free water in a substance that is available for microbial growth, not bound to molecules. In cannabis, controlling water activity is essential during the drying and curing process to ensure product quality and safety. If water activity is too high, mold, bacteria, and other pathogens can grow on the flowers, while too low a water activity level can result in overly dry, brittle flower that loses potency and flavor.
🔊 WAW·ter ak·TIV·ih·tee
In the Wild — Example
Water activity testing prevents mold from developing in stored cannabis even when it looks and feels dry.
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