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Official Sources & Verification

See the EPA and eCFR sources used to verify certification types, testing, recovery rules, sales restrictions, and card replacement.

Primary sources used

Verification method

Regulatory claims are checked against EPA pages and current eCFR text. Commercial test providers are not used as the authority for federal requirements. Provider prices and delivery methods can change and should be confirmed directly before purchase.

Last full source review: July 13, 2026