Modern Canna provides a vast range of laboratory analyses of medical marijuana, including cannabis moisture testing. A cannabis moisture test measures the water concentration in a marijuana sample. The moisture level of cannabis refers to the percentage of the sample’s total weight that is made up of water. The water concentration, or “moisture content”, of cannabis is a crucial indicator of the potential activity of microbiological contaminants such as fungi, bacteria, and insects.

Optimal Cannabis Moisture Levels

Generally speaking, cannabis moisture content should fall in the range of 6% to 15%. If a marijuana moisture test reveals a water concentration in excess of 15%, it could indicate a high risk for contamination by microorganisms. The “water activity” in a cannabis sample refers to the likelihood that the moisture in the sample will support the development of potentially dangerous contaminants. The water activity value should normally be lower than a measurement of 0.65aw to ensure that the cannabis does not spoil while being stored.

Cannabis Moisture Test

Following best practices when it comes to processing and storing medical cannabis, as well as managing moisture control during the drying process, is critical to ensuring that the product is safe and effective. Modern Canna uses the latest moisture analyzing equipment and reliable methodologies such as “dew point” and “loss on drying” tests to accurately and dependably assess the moisture content of your cannabis. A cannabis flower moisture test is a quick and reliable way to identify the water content of marijuana. Several measurements are taken on cured Cannabis flowers to determine the water concentration. The drying and curing process performed on medical cannabis products will effect the amount of moisture residue. In cannabis that is newly harvested, the moisture content may exceed 70% of the overall weight. Cannabis flowers that have been dried may “crunch” a little following the drying and curing process, at which point the moisture content levels should be lowered to a safe 15% or lower, at which point the cannabis is ready to be used for medicinal purposes.

What Affects the Moisture Content of Cannabis?

Water and moisture control is very important in growing cannabis. Too little water can leave the plant overly dry, while too much water can expose it to contaminants.

A number of factors contribute to the water concentration levels of marijuana flowers. The temperature in the environment in which cannabis is grown affects how much or how little the plants should be watered. If the temperature is high in the environment, more water is needed. In high heat the roots will absorb the water faster. Not only will the heat make the roots absorb faster, but it will also make all water within the room or environment evaporate. With low temperatures it will be the opposite. Low heat will result in less evaporation, an overall moist room, and a lot of water for the roots. Therefore, in low heat the cannabis will require less water.

Other factors are humidity and airflow. If there is high humidity then there is little need for water in the soil, and if there is low humidity then there is more need for water in the soil. The best humidity levels for cannabis is a range between 55%-65%. In order to prevent bud rot, vent fans or circulating fans are used to bring in airflow and help control humidity. Depending on how much airflow you give, you might end up increasing the water demand of the roots. Humidity and airflow, as well as temperature are just a few of the factors that will affect the environment in which cannabis is grown.

Marijuana Moisture Test Laboratory

Modern Canna is a medical cannabis and hemp analytical testing laboratory in Florida that helps safeguard patients by providing growers, dispensaries, and health professionals with accurate data. Our tests determine whether or not medical cannabis samples contain contaminants that could put patients at risk. Not only do our lab analysts and mocrobiologists inspect every sample for foreign matter, they also test for mycotoxins, microbes, pesticides, heavy metals, and solvents used in the production of cannabis-based concentrates – all of which can pose risks to a patient’s health if present in high enough quantities. We also perform a cannabis moisture testing to confirm that the samples have been adequately cured. For cannabis moisture analysis services in Florida, please contact our labs today by calling or through our online form.

Additional cannabis moisture testing resources:

  1. Guidance for State Medical Cannabis Testing Programs,
  2. Marijuana Policy Project,