Fact check
“Bona Fides Laboratory detected methylene chloride during routine testing for other contaminants in August 2026.”
Reasoning
Both excerpts from the ProPublica article report that Bona Fides Laboratory detected methylene chloride in August while conducting routine testing for pesticides and mold, matching the claim precisely.
On confidence: The claim is directly confirmed by two independent excerpts from the same ProPublica article, which explicitly state that Denver-based Bona Fides Laboratory detected methylene chloride in August during routine testing for other contaminants.
Important context
The detection occurred in the context of a recall of StayCon marijuana vape products, and the lab owner notified state regulators promptly.
Evidence
Supporting (2)
- Tier 1 — Primary sourceStayCon Marijuana Company Recalls Dozens of Contaminated Products — ProPublica
certification, told his agency it needed more time. Implementation, he said, will begin at the end of this month. Denver-based Bona Fides Laboratory in August detected the methylene chloride that prompted Friday’s recall notice during…
- Tier 1 — Primary sourceStayCon Marijuana Company Recalls Dozens of Contaminated Products — ProPublica
which reviews labs and recommends their certification, told his agency it needed more time. Implementation, he said, will begin at the end of this month. Denver-based Bona Fides Laboratory in August detected the methylene chloride that…
Limitations
The evidence comes from a single news source; no additional independent sources were provided to corroborate the event.
- Last verified:
- Sep 27, 2026, 4:20 AM CDT
- Pipeline:
- 2.1.0
- Claim type:
- Factual
Where this claim appeared
Colorado Marijuana Company Voluntarily Recalls Dozens of Contaminated Products Amid State Regulatory DelaysProPublica · Christopher Osher