Scope
The limits apply to regulated marijuana products, including inhaled, topical/transdermal, oral, rectal, vaginal, and audited products as described in the table.
Exact limit and units
| Metal | Matrix | Limit | Unit | Basis |
|---|---|---|---|---|
| Lead | Inhaled product or audited product administered by metered-dose nasal spray | <0.5 | ppm | Product as tested |
| Arsenic | Inhaled product or audited product administered by metered-dose nasal spray | <0.2 | ppm | Product as tested |
| Cadmium | Inhaled product or audited product administered by metered-dose nasal spray | <0.2 | ppm | Product as tested |
| Mercury | Inhaled product or audited product administered by metered-dose nasal spray | <0.1 | ppm | Product as tested |
| Lead | Topical and/or transdermal product | <10 | ppm | Product as tested |
| Arsenic | Topical and/or transdermal product | <3 | ppm | Product as tested |
| Cadmium | Topical and/or transdermal product | <3 | ppm | Product as tested |
| Mercury | Topical and/or transdermal product | <1 | ppm | Product as tested |
| Lead | Oral consumption or audited product with rectal or vaginal administration | <1 | ppm | Product as tested |
| Arsenic | Oral consumption or audited product with rectal or vaginal administration | <1.5 | ppm | Product as tested |
| Cadmium | Oral consumption or audited product with rectal or vaginal administration | <0.5 | ppm | Product as tested |
| Mercury | Oral consumption or audited product with rectal or vaginal administration | <1.5 | ppm | Product as tested |
How tested
The table sits in the required contaminant testing rules for regulated marijuana. Products are tested as finished marijuana products or audited products according to the rule text.
Enforcement posture
The limits are part of Colorado marijuana rules and failure above the acceptable limits is a regulatory compliance issue.
History of changes
The file is the 2022 Colorado MED rules extract for heavy metals.
How it compares
Colorado uses route-specific limits. The inhalation values are stricter than Nevada and Washington-style cannabis action levels for the same metals.
Sources
Update history
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