Microorganisms and bacteria are ubiquitous in our world. They often can grow under the same conditions as cannabis and if consumed, these contaminants could lead to serious illness.
Highgrade Labs Microbial screening ensures organisms’ presence is below a threshold considered safe for consumption.

We perform the total aerobic bacteria count, rapid yeast and mold, and E.coli tests using Petrifilm plates by 3M. The samples get prepared and diluted by 100 times with a buffer solution.


Once plated on the Petrifilm they go into a specific temperature controlled incubators for 48 hours. Each sample is then counted for colony forming units and reported on Confident Cannabis.

Flower, Concentrates, and Infused Products.