How limits are set
The standard for each analyte is the strictest maximum level set by any credible government regulator — the European Union, the United Kingdom, Codex Alimentarius, Health Canada, China, India, Brazil, the Gulf states (GSO), Australia/New Zealand, and the US FDA — converted into Infant formula (ready-to-feed, liquid)’s own as-consumed basis. It is a lookup of sovereign law, carrying at most one disclosed basis conversion where the law is written in another basis, and an explicit read-across where no government regulates the exact product. A certified product sits at or below every applicable sovereign limit at once.
Where no government regulates the exact product for an analyte, the standard does not go blank or invent a number: the limit is read across from the nearest government value for an analogous product, so a certified product still sits at or below a real sovereign limit. The ratchet tightens these after publication as surveillance warrants.
Master Limit Table
All values in ppb (µg/kg), as-consumed basis. Every analyte carries a firm ceiling. A brand meeting every value on a like-for-like basis qualifies for the mark.
Every claim analyte is equal at the gate. A product is certified only when every analyte is at or below 100% of its published government floor or disclosed read-across; above the limit, on any metal, it is not certified and carries no mark. Arsenic is limited in both forms: total arsenic (tAs) and inorganic arsenic (iAs) are separate ceilings that must both be met, and the species result never replaces the parent total. Total chromium is limited as shown; hexavalent chromium is controlled through it — mandatory Cr-VI speciation on any total-chromium result above 100 ppb, and any quantifiable Cr-VI fails.
Derivation
The full derivation for Infant formula (ready-to-feed, liquid). Each row lists every government maximum level in force worldwide, converted to the as-consumed basis; the HMTc limit is the strictest of them, and the last column names which sovereign law binds. A blank cell means that government sets no limit for this analyte in this product.
| Analyte | EU | UK | Codex | Canada | China | India | Brazil | GSO | AU/NZ | HMTc | Binds |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lead (Pb) | 10 | 10 | 10 | 10 | 10 | 20 | 10 | 10 | 10 | 10 | EU |
| Inorganic arsenic (iAs) | 10 | — | — | — | — | — | 20 | — | — | 10 | EU |
| Total arsenic (tAs) | — | — | — | — | — | — | — | — | — | 50² | read-across |
| Mercury (tHg) | — | — | — | — | — | — | — | — | — | 4 | IL |
| Cadmium (Cd) | 5 | 5 | — | — | — | 100 | 10 | 5 | — | 5 | EU |
| Total chromium (Cr) | — | — | — | — | — | — | — | — | — | 300² | read-across |
| Nickel (Ni) | 100 | — | — | — | — | — | — | — | — | 100 | EU |
| Tin (Sn) | — | — | — | — | — | 5000 | — | — | — | 5000 | India |
| Aluminium (Al) | — | — | — | — | — | — | — | — | 500 | 500 | AU/NZ |
All values µg/kg (ppb), as-consumed basis. ¹ basis-converted at the 8:1 powder-to-liquid ratio — the only such ratio a government legislates (China GB 2762 footnote c). ² read-across: no government sets this analyte for this exact product; the value is read across from the nearest government value for an analogous product. ³ not material in this matrix: measured but with no standalone number, controlled by the total-metal screen, not an invented value. Variants on this page: cow and soy. Where a cell differs between them the Master Limit Table shows both; the derivation above is for cow.
Occurrence and derivation rationale
For each analyte on the panel: what the peer-reviewed and survey literature measured in this category, cited one way to the Heavy Metal Index, and the Method v2.0 reasoning behind the certification limit — including, where no government sets a number, why the program sets one anyway. Occurrence figures are literature findings; the derivation is the certifier's.
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 10 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why lead is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 10 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why inorganic arsenic is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 4 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why total mercury is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 5 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why cadmium is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 100 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why nickel is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 5 mg/kg (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why tin is limited →
No citable primary occurrence measurement is routed to this cell in the corpus.
HMTc sets 500 ppb (regulatory-alignment): the strictest applicable government maximum level for this product form, adopted under Method v2.0 as the default certification standard. Why aluminium is limited →
Risk Flag
On the published occurrence literature to date, Infant formula (ready-to-feed, liquid) shows no systematic gap between typical market levels and the limit — the limit being the strictest government maximum for the product (Method v2.0). Certification is decided on a product’s own tested result, not on a distribution; an individual lot or supplier can still exceed a limit.
See the cross-category summary of the ingredients that most often struggle.
Cite this standard
Pendergrass, K. (2026). Infant formula (ready-to-feed, liquid): HMTc standard (Standard No. 10.83138/hmtc.std.1.infant-formula-ready-to-feed). Institute of Contaminant Standards. https://doi.org/10.83138/hmtc.std.1.infant-formula-ready-to-feed
© 2026 Institute of Contaminant Standards / Heavy Metal Certified. All rights reserved.
The literature baseline for every analyte is maintained independently at the Heavy Metal Index. This certification standard applies those findings; the two are kept editorially separate by design.