The instrument
This page records the heavy-metal maximum levels set by FDA CPG 540.600 - Methylmercury in fish and aquatic animals, the instrument of US-FDA, 1984. Every value below is transcribed into the Heavy Metal Index register from the primary text and is the value an HMTc standard cites when this jurisdiction binds a certification limit. It is a record of law, not an HMTc threshold.
Maximum levels
All values µg/kg (ppb), in the basis the instrument states. 1 maximum level across 1 analyte and 1 product category, grouped by analyte and ordered by limit.
| Limit µg/kg | Basis | Product scope | Provision |
|---|---|---|---|
| Methylmercury (MeHg)1 limit | |||
| 1000 | wet weight, edible portion | fish, shellfish, crustaceans, and other aquatic animals, fresh, frozen or processed | Methyl mercury expressed as mercury. |
Where HMTc cites it
Cells where this instrument holds the strictest government value in force among credible regulators, and therefore binds a published HMTc limit.
A limit recorded above binds nothing today only because another government holds a stricter value for every published cell. It may still bind later, as other jurisdictions relax or as a new subcategory is published.
How this interacts with HMTc
HMTc certification standards adopt the strictest existing maximum level set by any credible government, applied cell-by-cell. Where this instrument holds the strictest value for a (product, analyte) cell, it binds the HMTc limit and the standard cites this page. This page does not set or justify any HMTc threshold; it records the sovereign requirement the program measures against.
A reference page is a record of law, not an HMTc threshold. It states what a government requires; the standard page states what the program requires, and names which instrument binds each cell.