Oregon Oregon Health Authority, Public Health Division

Rule Rule 333-007-0420
Standards for Testing Water Activity and Moisture Content


(1) Usable marijuana must be tested by a laboratory for:
(a) Water activity; and
(b) Moisture content.
(2) Kief must be tested by a laboratory for water activity unless the marijuana or usable marijuana used to produce the kief has already passed testing for water activity prior to producing the kief in accordance with OAR 333-007-0320 (Compliance Testing Requirements for Marijuana or Usable Marijuana)(6).
(3) If a sample has a water activity rate of more than 0.65 Aw the sample fails.
(4) If a sample has a moisture content of more than 15 percent the sample fails.
Source

Last accessed
Jun. 8, 2021