How every number on this page is set
What this standard coversEPA-registered antimicrobial products under FIFRA (sprays, wipes, concentrates) - a distinct testing bucket. Metal-based actives (silver, copper) are declared actives, not contaminants, and are outside the HMTc contaminant panel. Organotin is screened per REACH entry 20 given the historical organotin-biocide pathway. No FIFRA/FDA instrument sets a heavy-metal contaminant maximum for the product.
Disinfectants and sanitizers (EPA-registered antimicrobial sprays, wipes, concentrates) are EPA-registered antimicrobial products under FIFRA — a distinct testing bucket. The Confidential Statement of Formula and the antimicrobial active ingredient govern registration; a metal-based active (for example silver or copper) is a declared active, not a contaminant, and is outside the ten-analyte HMTc contaminant panel. No FIFRA or FDA sanitizing-solution instrument sets a heavy-metal contaminant maximum for the product, and household cleaning products are otherwise largely unregulated for heavy-metal content (the disclosure and eco-label regimes set no maximums). The toxic panel is therefore read across from the nearest coherent statutory consumer-chemical regime, China’s mandatory cosmetic trace-metal limits (Safety and Technical Standards for Cosmetics, 2015) — conservative, because a cosmetic is prolonged leave-on skin contact and an antimicrobial spray or wipe is incidental. Every number is in the product’s native basis: total heavy-metal content as placed on the market.
Where no sovereign limit exists but the metal is a real or plausible contaminant, the standard publishes an analytical method and an escalation rule rather than an invented threshold (see Screened by method below); organotin is screened here because antimicrobial products are the one cleaning sub-scope with a plausible organotin-biocide pathway. Inorganic arsenic and methylmercury are bounded by their total-element parents and recorded as not material.
Master Limit Table
Limits in mg/kg of product as placed on the market. Tier 1 (Pb, Cd, iAs, Hg) are zero-tolerance toxics; Tier 2 (tAs, Ni, Al, Cr, Sn) carry a transitional allowance under the program’s Status A–E framework. Analytes with no government limit for this product are listed below the table (screened by method, or not material), so all ten certification analytes are accounted for.
| Analyte | Tier | HMTc limit | Basis | Strictest government | Rationale |
|---|---|---|---|---|---|
| Lead (Pb) | Tier 1 | 10 | total lead content, product as placed on the market (mg/kg) | China (read-across) | read-across |
| Arsenic, total (tAs) | Tier 2 | 2 | total arsenic content, product as placed on the market (mg/kg) | China (read-across) | read-across |
| Cadmium (Cd) | Tier 1 | 5 | total cadmium content, product as placed on the market (mg/kg) | China (read-across) | read-across |
| Mercury, total (tHg) | Tier 1 | 1 | total mercury content, product as placed on the market (mg/kg) | China (read-across) | read-across |
Screened by method — no government limit
No sovereign sets a heavy-metal maximum for these analytes in a household cleaning product, yet each is a real or plausible contaminant of the class. Rather than invent a number, the standard publishes the analytical method and the escalation rule for each: certification measures the analyte and escalates an out-of-band lot to ALARA review, not to a pass/fail against a fabricated threshold. This is an honest control, not a silent gap.
| Analyte | Analytical method | Escalation rule |
|---|---|---|
| Nickel (Ni) | Total nickel by ICP-MS on the product as placed on market (acid digestion). | Nickel is a confirmed dermal sensitizer and is measured in household cleaning products (ecetoc1992). No jurisdiction sets a numeric total-nickel maximum for antimicrobial products, so certification screens total nickel and escalates a lot above the running category control band to ALARA review. |
| Aluminium (Al) | Total aluminium by ICP-MS on the product as placed on market. | Aluminium is Tier-2 and may be a functional ingredient. No jurisdiction sets an antimicrobial-product aluminium maximum. Screen total aluminium; a lot outside the functional-ingredient expectation triggers ingredient review. |
| Chromium, total (Cr) | Total chromium by ICP-MS on the product as placed on market. | Total chromium is measured in cleaning products (ecetoc1992). No jurisdiction sets an antimicrobial-product chromium maximum. Screen total chromium and reflex Cr(VI) speciation where total chromium is elevated or the formulation is oxidizing/acidic. |
| Chromium VI (Cr-VI) | Hexavalent chromium by IC-ICP-MS with alkaline extraction (US EPA 3060A / 7199). | Cr(VI) is measured in some consumer cleaning products (ecetoc1992) and oxidizing antimicrobial chemistries (hypochlorite, peroxides) can stabilize it. No jurisdiction sets an antimicrobial-product Cr(VI) maximum. Reflex Cr(VI) speciation on oxidizing formulations and where total chromium is elevated; escalate a positive Cr(VI) result to ALARA review. |
| Tin (Sn) | Organotin speciation (DBT/DOT/TBT as Sn) by GC-ICP-MS or GC-MS, plus total inorganic tin by ICP-MS. | Some antimicrobial products historically used organotin biocides; REACH Annex XVII entry 20 restricts organotin in consumer articles. Screen organotin on antimicrobial products and escalate any organotin detection; inorganic tin has no formulation source and is verified periodically. |
Not material for this product
These analytes carry no ceiling because a species-specific limit is bounded by its published total-element parent, or no source and no pathway exist in the product. Each determination is rebuttable and evidence-tested (recorded in the index register), screened during certification, and recorded here rather than left as a silent gap.
| Analyte | Why it carries no ceiling for this product |
|---|---|
| Inorganic arsenic (iAs) | No jurisdiction sets an inorganic-arsenic limit for antimicrobial cleaning products; the consumer-chemical trace-metal instruments regulate TOTAL arsenic (see the tAs cell), which bounds the inorganic fraction (iAs <= tAs). No routed occurrence source measured or speciated inorganic arsenic in these products. |
| Methylmercury (MeHg) | Methylmercury has no formation or migration pathway in an antimicrobial formulation; it is a marine-bioaccumulation speciation. The consumer-chemical mercury instruments regulate total mercury (see the tHg cell), which bounds any organomercury fraction. No routed occurrence source measured or speciated methylmercury in these products. |
Derivation — every government value, side by side
Each row lists the government value(s) weighed for this analyte in the total-content basis, converted to mg/kg; the HMTc limit is the strictest of them (or the disclosed read-across where no direct sovereign limit exists).
| Analyte | Government value(s) considered (mg/kg) | HMTc | Binds |
|---|---|---|---|
| Lead (Pb) | China 10 (read-across) | 10 | China (read-across) |
| Arsenic, total (tAs) | China 2 (read-across) | 2 | China (read-across) |
| Cadmium (Cd) | China 5 (read-across) | 5 | China (read-across) |
| Mercury, total (tHg) | China 1 (read-across) | 1 | China (read-across) |
Cite this standard
Pendergrass, K. “Disinfectants and sanitizers (EPA-registered antimicrobial sprays, wipes, concentrates).” In Heavy Metal Tested & Certified (HMTc) Household Cleaning and Dishwashing standard, version 1.0 (2026-08-13). Institute of Contaminant Standards (ICS), 2026.
The evidence each limit is applied to lives on the independent Heavy Metal Index; HMTc cites it one way and never the reverse. HMTc standards are living, versioned documents; this page reflects 1.0 (2026-08-13).
Source regulations
Every government regulation weighed to set this standard, in the total-content basis of the product as placed on the market. Household cleaning products are largely unregulated for heavy-metal content; where no sovereign limit exists, the analyte is screened by method or recorded as not material rather than assigned an invented number.
| # | Regulation | Basis | Role in this standard |
|---|---|---|---|
| 1 | China Safety and Technical Standards for Cosmetics (2015, NMPA) | finished consumer-chemical product as placed on market | Read-across anchor for the toxic panel (nearest coherent statutory consumer-chemical regime) |