Â© Johnson Matthey 2017 - Tel. +44 (0)1763 253200 - Email: mj@matthey.com Accessibility Terms of Use Privacy Policy Sitemap We use cookies to help understand how people use our website.
Fresh cannabis plants are around 80% water (all %'s by weight); curing generally begins after the cannabis has lost half of it's initial mass, and contains approximately 33% of it's initial water.
Potency, Purity and Dose: THC is the major psychoactive constituent of cannabis. Potency is dependent on THC concentration and is usually expressed as %THC per dry weight of material. Average THC concentration in marijuana is 1-5%, hashish 5-15%, and hashish oil Â³ 20%.The form of marijuana known as sinsemilla is derived from the unpollinated female cannabis plant and is preferred for its high THC content (up to 17% THC).Recreational doses are highly variable and users often titer their own dose.annabis / Marijuana (Î´ 9 -Tetrahydrocannabinol, THC). Marijuana is a green or gray mixture of dried shredded flowers and leaves of the hemp plant Cannabis sativa. Hashish consists of resinous secretions of the cannabis plant. Dronabinol (synthetic THC) is a light yellow resinous oil.