Stillwater Laboratories Inc. is an independent analytical laboratory located in Olney, Montana, providing cannabis analysis under Montana Code Annotated (MCA) 50.46.301 et seq (Medical Marijuana Act).  We provide accurate and reliable analytical services at a fair and sustainable cost, using validated methods and state-of-the art equipment to provide you with fast, accurate, and reproducible results.

Our test methods include analysis of cannabis flower, trim, edibles, and extracts for potency, terpenes, moisture, residual solvents (extracts), pesticides, microbial contamination, and mycotoxins to ensure safety and confidence in your product.

Stillwater Labs is 100% locally-owned and operated by Montana residents.

Latest News

The New Frontier in a Laboratory | September 5, 2019

Stillwater Laboratories operate as one of four labs in the state that can test medical marijuana products.


Montana Lt. Gov. Mike Cooney spent Thursday afternoon touring Stillwater Laboratories in Olney — the longest-standing state-certified medical marijuana testing facility in the state.


Stillwater Labs uses Shimadzu analytical instruments that are maintained through Shimadzu’s Montana field office. The Shimadzu line of test equipment is at the forefront of cannabis testing and has been used and validated in all other medical marijuana states in the US. Shimadzu’s instruments are a great balance of high-end function, ease of use, robustness, and cost of operation that allow Stillwater Labs to offer competitively priced analyses, on time.
Stillwater Labs has a newly commissioned LC-2030C high performance liquid chromatograph for potency testing, a GCMS-QP2020 gas chromatograph with a quadrupole mass spectrometer and HS20 headspace autosampler for terpene, solvent, and pesticide analysis, and MOC63U moisture balances to measure water content.
Our equipment is installed in a dedicated access-hardened climate-controlled room to ensure consistency and security of your product and analytical data.
As a requirement for ISO accreditation, Stillwater Labs references ISO 17025 accredited labs for cross-checking our analyses and for peer-to-peer consulting.

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Stillwater Labs is doing all it can to ensure the integrity of the information on this website, but we can’t make any guarantees regarding accuracy. If you see anything in this site that you believe is contrary to law/best practice, please get back to us.
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