Water Activity Testing

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Because this issue with microbial growth is based on water activity, there are specific government compliance parameters for a variety of different products that need to be kept shelf stable. Cannabis is one of those, and there are standards set up in order to help people with compliance. So one of the standards is for cannabis. And that is the ASTM D8196 for determining water activity in cannabis flower. The measurement of water activity or equilibrium relative humidity (ERH) is a key parameter in the quality control of moisture-sensitive products or materials. If there is too much water in a product, there is a risk of microbial growth and water migration.


Our Testing Process
What We Test For

Must be < 0.65aW in plant material &
< 0.85aW in Cannabis product.

Let's Get Started

If you’re an existing Indicative-Testing client, click below to login to view/manage your testing progress. If you’re new to Indicative-Testing, click Register to get started. Indicative-Testing customers will receive their test results and an official Maine testing certificate via our customer portal once testing is done.