ISO 8124-3:2020 — Safety of toys, Part 3: Migration of certain elements

This is the third edition of the International Organization for Standardization (ISO) toy safety standard for soluble heavy-element migration, prepared by ISO/TC 181 Safety of toys and published 2020-03 as ISO 8124-3:2020(E). The standard specifies maximum acceptable levels and methods of sampling, extraction, and determination for the migration of eight elements — antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium — from accessible toy materials and parts of toys. Maximum levels are stated in milligrams per kilogram of toy material and are reported as adjusted analytical results after subtraction of a per-element analytical correction. Three material categories receive distinct limit sets: any toy material other than modelling clay and finger paint, modelling clay, and finger paint. The standard’s underlying derivation is a daily bioavailability budget per element combined with an assumed 8 mg/day average ingestion of toy material; the third edition’s main technical changes versus ISO 8124-3:2010 are the introduction of two detailed dewaxing methods for sample preparation and the addition of an informative ICP-OES analytical method in Annex C. The 2020 edition consolidates ISO 8124-3:2010 with its 2014 and 2018 amendments into a single republished document.

Key numbers

Table 1 — Maximum acceptable element migration from toy materials (mg/kg of toy material, adjusted analytical result)

Material conformity is determined against the adjusted analytical result obtained by subtracting the per-element analytical correction in Table 2 from the laboratory’s analytical result.

Table 2 — Analytical correction (%) applied to the laboratory analytical result before comparison to Table 1

Worked example provided in §4.2: a measured lead migration of 120 mg/kg, less the 30 % Pb correction, yields an adjusted result of 84 mg/kg, which is below the 90 mg/kg Pb limit and therefore conforming.

Daily bioavailability budget underlying the limits (Introduction)

The limits are derived from a per-element daily bioavailability budget combined with a working hypothesis of 8 mg/day average toy-material ingestion across material categories:

• antimony: 0.2 µg/day
• arsenic: 0.1 µg/day
• barium: 25.0 µg/day
• cadmium: 0.6 µg/day
• chromium: 0.3 µg/day
• lead: 0.7 µg/day
• mercury: 0.5 µg/day
• selenium: 5.0 µg/day

The Introduction explicitly notes that the 8 mg/day toy-ingestion figure is the currently accepted working hypothesis and that in certain individual cases this value might be exceeded. Limit values were further adjusted to ensure analytical feasibility taking into account limits achievable under current manufacturing conditions (see Annex D, Background and rationale, which lies outside the iTeh preview’s visible page range — see verification notes).

Scope of application (§1.1–§1.4)

§1.1 — The standard specifies maximum acceptable levels and methods for the eight elements named above, applied to toy materials and parts of toys.

§1.2 — Maximum levels are specified for migration from the following toy materials: coatings of paints, varnishes, lacquers, printing inks, polymers and similar coatings (§9.1); polymeric and similar material including laminates, whether textile-reinforced or not but excluding other textiles and non-woven textiles (§9.2); paper and paperboard (§9.3); natural, artificial or synthetic textiles (§9.4); glass/ceramic/metallic materials, excepting lead solder when used for electrical connections (§9.5); other materials whether mass-coloured or not, e.g. wood, fibreboard, hardboard, bone and leather (§9.6); materials intended to leave a trace, e.g. graphite materials in pencils and liquid ink in pens (§9.7); pliable modelling materials, including modelling clays and gels (§9.8); paints to be used as such in the toy, including finger paints, varnishes, lacquers, glazing powders and similar materials in solid or liquid form (§9.9).

§1.3 — The requirements apply to: all intended food and oral contact toys, cosmetic toys and writing instruments categorized as toys, irrespective of any age grading or recommended age labelling; all toys intended for or suitable for children under 72 months of age; accessible coatings, irrespective of any age grading or recommended age labelling; accessible liquids, pastes and gels (e.g. liquid paints, modelling compounds), irrespective of any age grading or recommended age labelling.

§1.4 — Packaging materials are excluded unless they are intended to be kept (e.g. boxes and containers) or unless they form part of the toy or have intended play value. Parts of toys obviously unlikely to be sucked, licked or swallowed (e.g. the coating on the crossbeam of a swing set, the tyres of a toy bicycle) bear no requirement under this document.

Extraction principle (§5)

Soluble elements are extracted from toy materials under conditions that simulate the material remaining in contact with stomach acid for a period of time after swallowing. Concentrations of the soluble elements are then determined quantitatively by inductively coupled plasma optical emission spectrometry (ICP-OES) or other specified analytical methods with specified method detection limits (MDL).

Reagents (§6)

The principal extraction reagent is hydrochloric acid: c(HCl) = (0.07 ± 0.005) mol/L (§6.1), with HCl solutions at approximately 0.14, 1, 2, and 6 mol/L specified for pH adjustment and other procedural uses (§6.2–§6.5). General-purpose reagent n-heptane (C₇H₁₆, 99 %) is specified in §6.6. Water of at least grade 3 purity, in accordance with ISO 3696, is required (§6.7).

Apparatus highlights (§7)

A plain-weave wire-cloth stainless steel metal sieve of nominal aperture 0.5 mm with tolerances per Annex A Table A.1 (§7.1); means of measuring pH to proper accuracy without cross-contamination, with the mixture pH range required between 1.0 and 1.5 as specified in §9 (§7.2); a 0.45 µm pore size membrane filter (§7.3); a centrifuge capable of (5 000 ± 500) g (§7.4); means of agitating the mixture at (37 ± 2) °C (§7.5); a Soxhlet extractor per ISO 8124-6:2018 Figure C.1 (§7.7); a solvent extractor per ISO 8124-6:2018 Figure C.2 (§7.8); high retention filter paper (§7.9).

Selection of test portions (§8)

A laboratory sample shall consist of a toy either in the form in which it is marketed or in the form in which it is intended to be marketed. Test portions shall be taken from the accessible parts (see ISO 8124-1). Identical materials in the toy may be combined and treated as a single test portion, but additional toy samples shall not be used. Test portions may be composed of more than one material or colour only if physical separation (e.g. dot printing, patterned textiles) or mass limitation precludes the formation of discrete specimens. Test portions of less than 10 mg of material shall not be tested.

Coatings extraction (§9.1) — only sub-clause of §9 visible in the iTeh preview

§9.1.1 Test portion preparation: remove the coating from the laboratory sample by scraping at room temperature and comminute it at a temperature not exceeding ambient. Collect enough coating to obtain a test portion of preferably not less than 100 mg passing a 0.5 mm sieve (§7.1). If between 10 mg and 100 mg of uncontaminated uniform coating is available, extract in accordance with §9.1.2 and calculate the quantity of the soluble elements as if a 100 mg test portion had been used; report the test-portion mass per Clause 11(e). Coatings that cannot be comminuted by nature (e.g. elastic/plastic paint) are removed from the laboratory sample without comminuting.

§9.1.2 Extraction procedure: mix the prepared test portion with 50 × its mass of c(HCl) = 0.07 mol/L aqueous HCl at (37 ± 2) °C in a container of appropriate size (§7.6). [For 10–100 mg test portions, mix with 5.0 mL of the same HCl solution at (37 ± 2) °C.] Shake for 1 min; check acidity; if pH > 1.5, add approximately 2 mol/L HCl dropwise while shaking until pH is between 1.0 and 1.5. Protect from light; agitate continuously at (37 ± 2) °C for 1 h; then allow to stand for 1 h at (37 ± 2) °C. Without delay, separate solids by membrane filtration (0.45 µm) and, if necessary, by centrifuging at up to 5 000 g (no longer than 10 min, reported per Clause 11(e)). For storage beyond one working day prior to elemental analysis, stabilize the solution with HCl to approximately c(HCl) = 1 mol/L (§6.3) and report per Clause 11(e).

Document changes vs ISO 8124-3:2010 (Foreword)

The third edition cancels and replaces the second edition (ISO 8124-3:2010) and incorporates Amendments ISO 8124-3:2010/Amd.1:2014 and ISO 8124-3:2010/Amd.2:2018. Foreword-stated main changes:

• two detailed dewaxing methods have been introduced to replace the original one
• an ICP-OES method for determination of the elements is given in Annex C as informative content

Normative references (§2)

• ISO 3696, Water for analytical laboratory use — Specification and test methods
• ISO 8124-1:2018, Safety of toys — Part 1: Safety aspects related to mechanical and physical properties
• ISO 8124-6:2018, Safety of toys — Part 6: Certain phthalate esters in toys and children’s products

Methods (brief)

ISO 8124-3:2020 specifies a stomach-acid simulation extraction followed by quantitative elemental analysis. The extraction acid is c(HCl) = 0.07 mol/L (the approximate molarity of resting human gastric acid), the temperature is (37 ± 2) °C (body temperature), the extraction is 1 h of continuous agitation followed by 1 h of standing, and the liquid-to-solid ratio is 50 × the test-portion mass. The pH of the extract is brought into the 1.0–1.5 range using approximately 2 mol/L HCl if the initial value exceeds 1.5. Solids are removed by 0.45 µm membrane filtration and centrifugation up to 5 000 g (≤10 min). The recovered solution is analysed for the eight target elements by ICP-OES per Annex C (informative) or by other methods with comparable method detection limits per §10.2 (not visible in the iTeh preview’s page range). Method-specific dewaxing procedures cover materials containing grease, oil, wax, or similar (§9.7.4, §9.8.3, §9.9.4, also outside the visible preview). Quantitation requires a method blank, calibration blank, calibration check solution, and per §3.3 a method detection limit equal to three times the standard deviation of the result obtained in the method blank by the analysing laboratory; per §3.11, the instrument detection limit equals three times the standard deviation of the calibration-blank result. The analytical result is then reduced by the per-element analytical correction in Table 2 before comparison to the maximum acceptable level in Table 1.

What this preview does not contain. The PDF ingested is the iTeh STANDARD PREVIEW for ISO 8124-3:2020 (12 pages total, the first ~13 pages of the full ~30+ page standard). The visible content covers the Foreword, Introduction, Clauses 1 (Scope), 2 (Normative references), 3 (Terms and definitions), 4 (Maximum acceptable levels, including Table 1 and Table 2), 5 (Principle), 6 (Reagents), 7 (Apparatus), 8 (Selection of test portions), and 9.1.1–9.1.2 (Coatings of paint, varnish, lacquer, printing ink, polymer and similar coatings extraction procedure). The preview does not visibly contain §§9.2–9.9 (extraction procedures for polymeric materials, paper and paperboard, textiles, glass/ceramic/metallic materials, other materials, materials intended to leave a trace, pliable modelling materials, paints), §10 (Elemental analysis, including §10.1 Methods of analysis, §10.2 Method detection limit MDL values, §10.3 Calculation of results), §11 (Test report requirements), Annex A (normative Sieve requirements), Annex B (informative Selection of procedure), Annex C (informative Methods for analysis of elements, including the ICP-OES method that is the third edition’s headline addition), Annex D (informative Background and rationale, including the per-element MDL and per-material-category derivation that ties the daily bioavailability budget to the Table 1 limits), or the Bibliography. The numerical limits (Tables 1 and 2) and the per-element daily bioavailability budget (Introduction) are the highest-value extractable content from the preview; the per-material extraction details and per-method MDLs are not visible and a future ingest from the full ISO 8124-3:2020 document is warranted if the wiki ever needs to reference Annex C MDLs or §9.2–§9.9 per-material procedures.

Implications

• Regulatory baseline for international toy-metals migration. ISO 8124-3:2020 is the current international voluntary consensus standard for migration of antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium from toy materials and parts of toys for children under 72 months. Many national toy safety regimes either incorporate ISO 8124-3 by reference (AS/NZS ISO 8124, IS 9873 Part 3 in India) or align technical limits with the ISO 8124-3 / EN 71-3 lineage that shares its 1985 derivation. The standard sits in the lineage that produced ASTM F 963 §4.3 in the U.S. (which until F 963-07 used the legacy EN 71-3 limits unchanged) and EN 71-3 in the EU (which the 2009/48/EC Toy Safety Directive subsequently tightened, particularly for Cd, Hg, Se, and a new Cr-VI-specific limit not present in ISO 8124-3:2020). Heavy Metal Index pages for toy-materials contamination should treat ISO 8124-3:2020 as the international floor against which national variations (ASTM F 963, EN 71-3 / 2009/48/EC, GB 6675.4 in China, ST 2016 in Japan) are compared.
• Speciation gap. The standard regulates total elemental migration: total Cr (no Cr-III vs Cr-VI distinction), total Hg (no MeHg vs iHg distinction), total As (no iAs vs tAs distinction). This is a known limitation; the EU 2009/48/EC Toy Safety Directive introduced Cr-III and Cr-VI as separately regulated species, and the toxicological assessments underlying both standards (CPSC 2012 Versar review, RIVM 2006, ATSDR profiles) explicitly derive species-specific ADIs. ISO 8124-3:2020 reflects the ISO/TC 181 decision to keep the regulated quantity at the total-elemental level for analytical-feasibility and inter-laboratory comparability reasons; the underlying toxicological derivation (Annex D, not visible in the preview) is presumably based on the same species-specific PODs as the EU and U.S. analogues.
• Migration vs total-content. ISO 8124-3 regulates migration (the fraction released into a stomach-acid simulant under controlled conditions), not bulk substrate concentration. A toy material may contain heavy metals in concentrations far above the Table 1 migration limits and still pass if the metals are not bioaccessible under the §9 extraction procedure; conversely, a damaged or aged surface (e.g. scratched paint) can release substantially more than an intact surface. The Kawamura et al. 2009 finding (summarized in johnson2012-cpsc-astm-f963-status) that 1 000 mg/kg Cd or Pb painted on glass plates released 310–910 mg/kg under the ISO 8124-3 scratched-paint extraction (3.5- to 12-fold above the migration limits for both metals) is the canonical illustration of why ISO 8124-3 cannot be back-translated to a total-content limit. HMT&C toy-related thresholds should distinguish migration- vs total-content limits explicitly rather than treating ISO 8124-3 numbers as content limits.
• Analytical correction is part of the conformity rule. The Table 2 analytical correction (30–60 % per element) is not a precautionary buffer that conservative labs may choose to apply; it is the standard’s required adjustment between the raw analytical result and the value compared against Table 1. Sb, As, and Se receive the largest correction (60 %), reflecting the standard’s recognition of inter-laboratory variability for these three elements under ICP-OES at the relevant concentration range. Pages on toy-product testing should explain the adjusted-vs-raw distinction explicitly because it can cause apparent disagreement between certificate-of-analysis values reported by different labs that use different conformity-decision rules.
• Modelling clay and finger paint are separately and more tightly regulated. Modelling clay tightens the Ba limit from 1 000 to 250 mg/kg, the Cd limit from 75 to 50 mg/kg, the Cr limit from 60 to 25 mg/kg, and the Hg limit from 60 to 25 mg/kg. Finger paint tightens further: Sb 10, As 10, Ba 350, Cd 15, Cr 25, Pb 25, Hg 10, Se 50 mg/kg. The rationale (per the Introduction’s reference to Annex D) is that ingestion of these material types is substantially more likely and quantitatively larger than for the general toy-materials category, so the underlying 8 mg/day toy-ingestion assumption is effectively re-scaled by a category-specific factor. Children’s art-and-craft material pages should reflect that ISO 8124-3 treats modelling clay and finger paint as a higher-exposure category, not as a lower-exposure one despite their generally lower bulk-metal content.
• App. Not directly relevant to ingredient contamination_profile data because no food matrix is involved. Relevant to a future toy-screening surface: the standard’s three-tier classification (general toy material vs modelling clay vs finger paint), the 8 mg/day toy-ingestion assumption, and the 0.07 mol/L HCl / 37 °C / 1 h stomach-acid extraction principle are the underlying logic a consumer-facing toy explainer needs to convey when contrasting “migration limit” vs “total content.”
• Courses. Useful primary international-standards document for the toy-metals regulatory-trajectory teaching module, particularly as the international consensus baseline against which the ASTM F 963 (U.S.) and EN 71-3 / 2009/48/EC (EU) trajectories are compared. The 2020 third edition’s headline addition of an informative ICP-OES method in Annex C (not visible in the preview) is the analytical-method anchor for many national toy-safety lab workflows.

Wiki pages this source may touch

• antimony
• arsenic
• arsenic-total
• barium
• cadmium
• chromium
• lead
• mercury
• mercury-total
• selenium
• toys-substrate-materials
• toys-painted
• art-craft-materials

Verification notes

• Source identification. International Organization for Standardization, “ISO 8124-3:2020(E) — Safety of toys — Part 3: Migration of certain elements,” third edition, 2020-03. Reference number ISO 8124-3:2020(E). Prepared by Technical Committee ISO/TC 181, Safety of toys. Published by the ISO copyright office, CP 401 • Ch. de Blandonnet 8, CH-1214 Vernier, Geneva. Cancels and replaces the second edition (ISO 8124-3:2010) and incorporates Amendments ISO 8124-3:2010/Amd.1:2014 and ISO 8124-3:2010/Amd.2:2018. The PDF ingested here is the iTeh STANDARD PREVIEW (12 pages) of the standard, watermarked “iTeh STANDARD PREVIEW (standards.iteh.ai)” throughout. ISO standards are not assigned DOIs; the canonical identifier is the reference number ISO 8124-3:2020(E).
• Preview-vs-full-document caveat. The ingested PDF is a preview that contains the front matter, Foreword, Introduction, and Clauses 1 through 9.1.2; the remainder of Clause 9 (per-material extraction procedures §9.2 through §9.9), Clauses 10 and 11 (Elemental analysis and Test report), and Annexes A, B, C, and D are not present in the preview’s visible page range. The Methods (brief) section and Verification notes flag every claim that derives from a section beyond the preview as either (a) explicitly outside the preview or (b) inferred from the parts that are visible. The numerical limits in Tables 1 and 2 and the per-element daily bioavailability budget in the Introduction are inside the visible preview and were transcribed verbatim. A future ingest of the full standard would be warranted before the wiki references Annex C ICP-OES MDLs or §9.2–§9.9 per-material procedures in any normative way.
• Authorship attribution. ISO standards are published under institutional authorship by the ISO Technical Committee that prepared them, not under individual authorship. ISO/TC 181 (Safety of toys) is the responsible committee. The Foreword identifies no individual editors or working-group conveners by name. Cited as ISO 2020 with institutional attribution. Cite key iso2020-8124-3-toy-migration-elements follows the org-name-year-short-desc convention used for institutional sources in this corpus (cf. codex-cccf17-2024 for Codex Alimentarius institutional reports).
• Source-tier rationale. evidence_tier: A: per CLAUDE.md Part 13, “government reports (FDA, EFSA, EPA, WHO, Codex), authoritative meta-analyses” are A-tier. ISO is an international standards-development organization with formal recognition under WTO TBT (Technical Barriers to Trade) and Member-body consensus voting under the ISO Directives Part 1 (referenced in the Foreword). National regulatory adoption is widespread (AS/NZS ISO 8124 in Australia/New Zealand, IS 9873 in India, GB 6675 alignment in China, ST in Japan, EN 71 alignment in EU). The standard is the de facto international floor for toy-metals migration regulation and meets the A-tier definition for authoritative institutional outputs.
• Source-type rationale. source_type: regulatory: matches the existing handling of regulatory-standards documents in the corpus (e.g., johnson2012-cpsc-astm-f963-status for the parallel ASTM F 963 / EN 71-3 lineage). The document’s primary output is a mandatory technical specification (numerical migration limits and the associated analytical procedure) that national regulatory and certification bodies adopt by reference; this functions as a regulatory document in operational terms even though ISO standards are formally voluntary consensus standards.
• License rationale. proprietary: ISO standards are copyright-protected works of the International Organization for Standardization (© ISO 2020 stated on every page of the PDF). Distribution requires permission from ISO or its member bodies; the copyright notice on page ii states “All rights reserved… no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission.” The iTeh preview is distributed for evaluation purposes; the full standard requires purchase from ISO or a national member body. Wiki-side reproduction is limited to the regulatory facts (numerical limits, scope, principle, analytical correction) that are necessary to convey the standard’s technical content as a regulatory reference, consistent with fair-use practice for regulatory standards. The numerical tables (Tables 1, 2) and the daily bioavailability budget are the regulatory facts of the standard and are reproduced verbatim; the procedural text of §9.1.1–§9.1.2 is paraphrased rather than copied verbatim.
• Frontmatter products: field. Three slugs selected from the 2026-05-18 taxonomy snapshot: toys-substrate-materials (the primary route for the general-toy-material category covered by Table 1’s first row, encompassing polymeric materials, paper/paperboard, textiles, glass/ceramic/metallic, wood/leather, materials intended to leave a trace, etc., per §1.2 sub-bullets 2–8); toys-painted (the primary route for the coatings category covered by §9.1, which the iTeh preview shows in detail, mapping to Table 1’s first row via the coating-on-toy material category and Table 1’s third row for finger paint coatings); and art-craft-materials (the route for modelling clay and finger paint, which receive distinct and tighter limits in Table 1 rows 2 and 3). I considered routing to specific toy-category slugs (toys-balls, toys-rattles, toys-substrate-materials, etc.) but the standard’s scope is intentionally the toy-materials level (paint, polymer, paper, glass, etc.) rather than any specific toy-product category, so per CLAUDE.md Part 5b (“the routing layer fans broad scopes out to sibling pages; the model does not pre-decide that fan-out by overspecifying frontmatter”) I left the routing at the broad material-category level. I did not route to face-paint because face-paint products are leave-on cosmetic products, not the finger-paint art-and-craft category that ISO 8124-3 Table 1 row 3 covers; finger paint maps to art-craft-materials together with modelling clay.
• Frontmatter ingredients: [] is correct — the source is a regulatory standard for toy materials, no food ingredients are involved.
• Frontmatter matrices: [] is correct — no measurements are reported in any food matrix. The extraction matrix is 0.07 mol/L HCl simulating stomach acid; toy paint, substrate plastic, modelling clay, and finger paint are not food matrices.
• Frontmatter metals: field. Includes all eight elements named in Tables 1 and 2 (Sb, tAs, Ba, Cd, Cr, Pb, tHg, Se). tAs rather than iAs because the standard regulates total elemental arsenic migration without speciation; ICP-OES per Annex C (informative; not visible in the preview) does not distinguish arsenic species, and the regulated quantity is total As. tHg rather than iHg or MeHg for the same reason: total elemental Hg migration is the regulated quantity. Cr (no Cr-VI) because ISO 8124-3:2020 does not include a separate Cr-VI limit; the EU 2009/48/EC Toy Safety Directive (effective 2013) introduced a separate Cr-VI limit but the ISO standard retains a total-Cr regulated quantity. The HMT&C analyte vocabulary metals not covered by this standard (Al, Ni, Sn, iAs, MeHg, Cr-VI) are deliberately absent from the frontmatter and noted here for completeness; this standard pre-dates the broader contemporary toy-metals scope.
• Speciation conventions. The standard regulates total elemental migration for As, Hg, and Cr. The Introduction’s per-element daily bioavailability budget (0.1 µg/day As, 0.5 µg/day Hg, 0.3 µg/day Cr) is also stated for the total-elemental quantity, not for any species. The HMI page reports the standard exactly as written; species-specific implications (e.g. Cr-VI tighter limits in EU 2009/48/EC, iAs vs tAs in CPSC 2012 Versar review) are flagged in Implications and referred to the parallel sources rather than back-derived here.
• Brand-firewall (Part 12). No brand-by-brand contamination data are reported; this is a standards document, not a product-testing study. The standard names methods and equipment generically (“ICP-OES,” “membrane filter of pore size 0.45 µm,” “centrifuge capable of (5 000 ± 500) g,” “Soxhlet extractor per ISO 8124-6:2018 Figure C.1”) rather than brand-specific instruments. Per the 2026-05-17 Exception 2 (scientific-method vendor/material names), even if brand-specific instruments had been named, they would be retained as methodological detail; in this case the standard is generic. No brand attribution exists in the source and none was constructed.
• Wiki/HMTc firewall (Part 2). The Key numbers section reports Tables 1 and 2 verbatim, the daily bioavailability budget verbatim, and the scope verbatim. The Implications section flags this as the international regulatory floor, notes the speciation gap, notes the migration-vs-total-content distinction, notes the analytical-correction rule, and notes the modelling clay / finger paint tighter sub-categorization — all of which are factual observations about what the standard does and does not regulate. No HMTc threshold values are proposed or justified; no HMTc certification level is endorsed or critiqued. The implication that “HMT&C toy-related thresholds should distinguish migration- vs total-content limits explicitly” is a methodological framing for downstream certification work, not a numerical threshold recommendation. The 2009/48/EC EU Directive’s tighter Cr-VI and Cd limits are referenced as factual regulatory-history context, not as evidence for or against any specific HMTc choice.
• Regulation-page mapping. No wiki/regulations/iso-8124-3-2020.md exists at the 2026-05-18 taxonomy snapshot. A dedicated regulation page for ISO 8124-3:2020 would be appropriate per CLAUDE.md Part 10 (regulations get pages on first encounter when they have hard agency identifiers); the rule identifier is unambiguous (“ISO 8124-3:2020(E), Third edition 2020-03, ISO/TC 181 Safety of toys”) and the lineage (replaces ISO 8124-3:2010 + Amd.1:2014 + Amd.2:2018) is clear from the Foreword. This is flagged for the next regulation-page creation pass rather than created in this manual-fetch ingest cycle, per the v2 skill’s “Do NOT create new ingredient or product pages mid-ingest; surface in stop-report” discipline. The corpus already contains references to the related ISO 8124-3:1997 second-edition predecessor (via johnson2012-cpsc-astm-f963-status mentioning the Kawamura et al. ISO 8124-3 migration methodology) and to the EU EN 71-3 lineage (also via the johnson2012 page); a future regulation-page for ISO 8124-3:2020 would cross-link to all three.
• Near-duplicates. None directly identified in the current corpus. The corpus contains johnson2012-cpsc-astm-f963-status for the parallel U.S. ASTM F 963 regulatory trajectory and mohammed2020-tt-toys-baby-items (Trinidad and Tobago toy and baby-item testing) and cephed2013-heavy-metals-childrens-toys-nepal (Nepal toy testing) for primary toy-testing studies that reference ISO 8124-3 / EN 71-3 limits as the regulatory benchmark; those are testing studies that use ISO 8124-3 as a reference point, not duplicates of the ISO standard itself. The ISO 8124-3:2010 second edition and its 2014 / 2018 amendments that the 2020 third edition supersedes are not separately in the corpus and need not be ingested separately because the 2020 edition consolidates them.
• Date and unit conventions. Migration limits are reported in mg/kg of toy material (= ppm = µg/g) per Table 1 caption (“Values in milligrams per kilogram of toy material”). Analytical correction is in percent per Table 2. Daily bioavailability budget is reported in µg/day per element per the Introduction. Reagent concentrations are reported in mol/L per §6. Apparatus tolerances follow ISO conventions: e.g., centrifuge capable of (5 000 ± 500) g, temperature (37 ± 2) °C, sieve nominal aperture 0.5 mm with tolerances per Annex A Table A.1 (not visible in preview).
• Folder context vs paper scope. The PDF lives under _extracted_infantcontact_05_Regulatory/05_Regulatory_CPSIA_CPSC_FDA/ in the Kimi corruption-issue raw tree. The folder name suggests U.S. CPSC / CPSIA / FDA regulatory context, but the document itself is an international ISO standard, not a U.S. federal regulatory document. The folder name reflects the Kimi-agent’s batch-organization scheme during the May 2025 corruption-extraction recovery, not the document’s actual jurisdictional origin. Jurisdictions frontmatter is set to [international] reflecting the document’s actual scope.
• Raw integrity. raw_sha256 = 545309862fa30ebf52c1e7d21c729a7273fe47d587a28c893e24fa602c0e4d73 confirmed against the file via shasum -a 256. PDF is 451 676 bytes (≈441 KB) and 12 pages (the iTeh preview length). The “iTeh STANDARD PREVIEW (standards.iteh.ai)” watermark and the embedded reference URL https://standards.iteh.ai/catalog/standards/sist/99ac88c1-7054-45ef-aa4b-7ff9f8cab043/iso-8124-3-2020 appear on every page; this is the iTeh AG catalog preview, not the official ISO-published full standard.

Page history

The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.