This article is informational only. It summarizes publicly documented EU and AAFCO regulatory frameworks for heavy metal limits in feed-grade mineral ingredients. It does not certify, test, or make any claim about the compliance status of any specific PlaxRaw shipment, and it is not a substitute for a buyer’s own certificate-of-analysis verification and regulatory due diligence. Always verify current numeric limits and testing requirements directly against the applicable regulation and your own lab results.
Feed-grade calcium carbonate isn’t held to a single universal heavy metal standard — it sits under a specific regulatory framework that treats lead, arsenic, fluorine, and related contaminants as a distinct compliance category from food-grade material, and buyers need to verify against the feed-specific framework rather than assuming food-grade documentation covers it.
Root Causes
In the European Union, maximum levels for undesirable substances in feed materials — including lead, cadmium, mercury, arsenic, and fluorine — are documented under Directive 2002/32/EC and its amending regulations, a framework specifically distinct from food-additive contaminant regulation. Within that framework, calcium carbonate as a feed material is documented as having specific maximum levels established for arsenic, fluorine, lead, and mercury, with the maximum levels for calcium and magnesium carbonate aligned with those set for calcium carbonate — meaning the regulation treats these related mineral feed materials as a coherent category with matched limits rather than setting calcium carbonate’s limits in isolation.
In the United States, the Association of American Feed Control Officials (AAFCO) documents maximum tolerable levels of heavy metals in complete feed and separately establishes the threshold at which a mineral ingredient itself would be considered contaminated — a two-tier structure that distinguishes between what’s acceptable in a finished ration and what’s acceptable in the raw mineral input feeding into it. Because these are two separate regulatory systems (EU Directive 2002/32/EC and AAFCO’s published standards) rather than one harmonized global limit, the applicable numeric thresholds depend on which jurisdiction’s feed is being formulated for.
What This Means for Raw Material Selection
Because feed-grade heavy metal limits sit under a dedicated regulatory framework distinct from food-additive rules, a certificate of analysis or compliance claim referencing food-grade contaminant standards doesn’t automatically satisfy feed-grade requirements, and the two shouldn’t be treated as interchangeable documentation.
The practical points for a buyer are: request a certificate of analysis referencing the specific feed regulation applicable to your market (EU Directive 2002/32/EC and its amendments, or the current AAFCO Official Publication) rather than a generic heavy-metal-testing claim, since the numeric limits and tested substances are set by these specific frameworks; verify that the calcium carbonate grade supplied is documented against the feed material limits specifically, not the food-grade or industrial-grade limits, since the frameworks are related but not identical; and confirm current numeric thresholds directly with the regulation text or your own accredited lab testing before finalizing a purchase decision, since specific limits are updated periodically and this article does not establish or certify any particular numeric value as currently in force.
Sources: FAOLEX/EUR-Lex text of Commission Regulation (EU) No 1275/2013 and related amendments to Directive 2002/32/EC on undesirable substances in animal feed; SaferPhosphates and AgroCertify industry technical summaries of heavy metal contaminant regulation in animal feed and AAFCO heavy metals requirements in the USA; California Department of Food and Agriculture Commercial Feed Regulatory Program technical guidance on feed safety and heavy metals. This article does not verify or certify compliance with any specific regulation for any PlaxRaw product.
