What is EN 1811:2023 and how does it test body jewelry?

EN 1811:2023 is the official European reference test method for release of nickel from post assemblies inserted into pierced parts of the human body and articles in direct and prolonged contact with the skin. Articles are submerged in artificial sweat solution (pH 6.5 ± 0.1) at 30 °C for 168 hours (one week), and released nickel ions are quantitatively measured using inductively coupled plasma spectrometry (ICP-OES or ICP-MS).

Does a negative Dimethylglyoxime (DMG) spot test prove jewelry is EU compliant?

No. A negative DMG spot test only indicates that nickel release is below approximately 10 µg/cm²/week—which is 50 times higher than the legal REACH piercing threshold of 0.2 µg/cm²/week. An alloy can easily release enough nickel to cause allergic contact dermatitis and violate European law while yielding a negative DMG test result.

What jewelry materials are safe for individuals with a diagnosed nickel allergy?

Safe, biocompatible choices include BioFlex® body jewelry (medical-grade PP-R random copolymer, contains no metal or nickel; the resin holds USP Class VI and the material passed the ISO 10993 biological tests), implant-grade titanium (ASTM F136 / ISO 5832-3 Ti-6Al-4V ELI), pure niobium (ASTM B392, 99.9% unalloyed), and platinum (Pt 950). Austenitic surgical steel and gold alloys containing nickel or plated with nickel under-layers should be avoided.

Why are historical EN 1811 test reports considered legally outdated?

Historical test reports issued under EN 1811:2011 or EN 1811:2011+A1:2015 frequently utilized an inconclusive decision band (0.11 to 0.28 µg/cm²/week) that cannot be marketed as compliant today. Furthermore, REACH Annex XVII Entry 27 legally requires coated or plated articles to undergo EN 12472 wear simulation (two years of simulated normal wear) before EN 1811 testing; older reports tested un-aged items and are legally invalid.

Nickel Release Calculator: EN 1811 & REACH Reference

What EN 1811 measures, the legal EU piercing limits, and what determines whether jewelry releases nickel.

Is EN 1811 compliance the same as "nickel-free"?

No. "Nickel-free" is an unregulated marketing phrase with no statutory definition under EU law. EN 1811 does not test whether an alloy contains zero nickel by weight. Instead, it measures the rate at which nickel ions leach out of the jewelry surface into artificial sweat over one week. An alloy containing nickel—such as implant-grade 316LVM stainless steel with 10% to 14% nickel—can meet the legal standard because its passive chromium oxide layer prevents nickel release. Conversely, an inferior alloy with only 1% nickel can fail if its surface releases freely.

What is the EU nickel limit under REACH Annex XVII, Entry 27?

European REACH Regulation (EC) No 1907/2006, Annex XVII, Entry 27 specifies two strict release thresholds: less than 0.2 µg/cm²/week for post assemblies inserted into pierced ears and other pierced parts of the human body during epithelization and healed wear; and 0.5 µg/cm²/week for articles intended to come into direct and prolonged contact with the skin. For coated articles, the coating must ensure the release rate remains below the limit for at least two years of normal use, verified by EN 12472 mechanical wear simulation before EN 1811 testing.

Composition facts, metallurgical behavior, and required documentation. This tool does not estimate or simulate release numbers.

Protective Coating Lifespan & EN 12472 Wear Simulation

EN 12472:2020 simulates 2 years of normal wear (abrasive tumbling in synthetic sweat) prior to EN 1811 testing. See why coatings degrade and why substrate selection is critical.

Gold Flash (<0.1 µm)

Thin Gold Flash (<0.1 µm): Rapid micro-porosity and abrasion loss under synthetic sweat friction. If applied over leachable brass or nickel-silver, severe nickel release begins early.

Micron Electroplate (1–2 µm)

Heavy Micron Electroplate (1–2 µm): Higher durability but mechanical friction at threads, hinges, and seams eventually breaches the barrier. Must use a certified nickel-free barrier layer.

PVD Ceramic (0.5–2 µm)

PVD on Biocompatible Core (0.5–2 µm TiN/ZrN): High-hardness ceramic molecular bond withstanding prolonged EN 12472 cycles. Critical rule: applied over ASTM F136 titanium, even complete coating wear exposes 0% nickel safe metal.

The Legal Limits: REACH Annex XVII, Entry 27

Regulation (EC) No 1907/2006 (REACH) Annex XVII, Entry 27 (implementing EU Directive 94/27/EC, amended by 2004/96/EC) establishes statutory release thresholds across Europe:

< 0.2 µg/cm²/week

0.2 µg/cm²/week — Pierced Parts of the Body

Applies to any post assembly or article inserted into pierced ears and other pierced parts of the human body during epithelization of the wound caused by piercing, whether subsequently retained or not. This encompasses both initial piercing jewelry and healed piercing jewelry inserted into a tract.

< 0.5 µg/cm²/week

0.5 µg/cm²/week — Direct & Prolonged Skin Contact

Applies to articles intended to come into direct and prolonged contact with the skin, such as earrings, necklaces, bracelets, chains, anklets, finger rings, wristwatch cases and straps, rivets, buttons, tighteners, and zippers on garments.

Two-Year Durability for Coated Articles

Coated non-nickel articles must ensure that the rate of nickel release does not exceed the relevant limit (0.2 or 0.5 µg/cm²/week) for a period of at least two years of normal use. Compliance is tested by subjecting the coated article to simulated accelerated wear and corrosion under EN 12472 before testing under EN 1811.

Which Limit Applies to What: Worked Examples

Statutory classification under REACH Annex XVII Entry 27:

What EN 1811:2023 Is & How It Operates

EN 1811:2023 is the official European standard method titled: "Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin". It replaced EN 1811:2011+A1:2015.

The test procedure immerses the test item in artificial sweat solution (containing sodium chloride, DL-lactic acid, and urea, pH adjusted with dilute ammonia) maintained at 30 ± 2 °C for exactly 168 ± 1 hours (one full week) without agitation. The quantity of dissolved nickel ions in the solution is then quantitatively measured using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) or Mass Spectrometry (ICP-MS), normalized against the exposed surface area in square centimeters.

EN 1811:2023 & REACH Annex XVII Entry 27

Regulatory Changelog: EN 1811 Revisions & Why Historical Reports Expire

Understanding standard revisions is critical for piercers reviewing mill certificates and laboratory test reports. Test reports issued under superseded standards or without mandatory wear simulation do not guarantee legal compliance under REACH Annex XVII Entry 27 today.

EN 1811:1998 Superseded

Original European harmonized standard for Directive 94/27/EC. Assessed migration into artificial sweat over 1 week. Lacked standardized wear simulation for coated items and used a wide tolerance window.

EN 1811:2011 Superseded

Introduced an adjustment factor (0.1) that led to confusion, and established an 'inconclusive' band (0.11 to 0.28 µg/cm²/week for piercing posts). Many suppliers misinterpreted inconclusive lab reports as passes.

EN 1811:2011+A1:2015 Superseded

Removed the 0.1 adjustment factor and clarified measurement uncertainty rules, but still retained an ambiguous inconclusive band. Often performed on un-aged plated items without wear pre-treatment.

EN 1811:2023 Current European Standard

Current official reference test method. Clarifies testing of piercing post assemblies, eliminates ambiguity in decision rules, tightens artificial sweat preparation tolerances, and strictly integrates with EN 12472:2020 wear pre-treatment for coated articles.

Why Historical Test Reports Might Be Legally Outdated

• Measurement Uncertainty Decision Rules: EN 1811:2011 and A1:2015 permitted an 'inconclusive' result band (0.11 to 0.28 µg/cm²/week for piercing posts) where laboratories did not declare a failure. Under modern enforcement and EN 1811:2023, strict decision rules prevent ambiguous passes from being marketed as compliant.
• Mandatory Wear Simulation (EN 12472:2020): Older certificates on gold-plated, PVD, or rhodium-flashed body jewelry tested items in pristine, un-aged condition. REACH Annex XVII Entry 27 legally mandates a two-year simulated wear resistance; un-aged test reports are legally invalid for coated jewelry.
• Universal Piercing Post Classification: Modern regulatory guidelines make clear that all post assemblies inserted into epithelialized or un-epithelialized piercing tracts fall under the 0.2 µg/cm²/week threshold. Older certificates attempting to classify healed piercing posts under the 0.5 µg/cm²/week skin contact limit are non-compliant.
• Reagent Purity and Calibration Tightening: The 2023 update tightens sweat solution buffering and analytical ICP calibration tolerances, meaning marginal passes produced in older testing runs may fail modern accredited laboratory audits.

The Dimethylglyoxime (DMG) Spot Test: Both Ways

The DMG spot test (standardized in CEN/TR 12471) is a qualitative chemical screening method, not a substitute for EN 1811 testing.

What a Positive Result Tells You

A strawberry-red complex indicates the presence of soluble nickel ions leaching readily from the surface at a concentration roughly above 0.5 µg/cm²/week. A positive test indicates the article is releasing nickel and is unsuitable for piercing wear.

What a Negative Result DOES NOT Tell You

A negative result does NOT prove compliance with the 0.2 µg/cm²/week piercing limit. The chemical colorimetric threshold of DMG is less sensitive than laboratory ICP spectrometry. Furthermore, lacquer, thin gold flash, or passivation layers can temporarily mask underlying nickel that will release once worn.

What Decides Whether Jewelry Releases Nickel

Release is not determined by multiplying composition by a surface number. It is governed by five metallurgical and biological factors:

• Crystal Lattice Bonding: How tightly nickel atoms are bound into the crystalline structure of the alloy.
• Passive Oxide Layer: Stable chromium oxide (Cr₂O₃) or titanium oxide (TiO₂) films isolate bulk metal from sweat.
• Surface Finish: Micro-roughness and crevices increase true surface area and create micro-galvanic cells.
• Coatings & Mechanical Wear: Plating rubs off over time; wear simulation (EN 12472) tests whether underlying layers expose nickel.
• Sweat Chemistry & pH: Individual skin pH (acidic sweat accelerates ion dissolution) and chloride ion concentrations.

Symptom Route: Irritated, Red, or Weeping Piercing

If your piercing is red, itchy, or weeping, the symptoms may be a reaction to nickel release, an ordinary phase of wound healing, or a bacterial infection. Review the differences below and take the listed steps regarding your jewelry.

Observation	Ordinary Healing	Nickel Contact Dermatitis	Bacterial Infection

Immediate Steps to Take Regarding Jewelry

Do not twist or pick at the jewelry. Trauma worsens both dermatitis and healing.
Check your invoice or ask your piercer for the exact material specification and accredited EN 1811 test report.
If your jewelry is unverified steel, plated base metal, or unknown white gold, consult your piercer about switching to guaranteed nickel-free materials: ASTM F136 implant-grade titanium, ASTM B392 niobium, or BioFlex® body jewelry (medical-grade PP-R).
Consult a physician or dermatologist for formal diagnosis and patch testing if symptoms persist.

For People with a Nickel Allergy

If you have been diagnosed with a nickel allergy by patch test, or suspect metal sensitivity, select materials whose chemical formulation contains zero nickel.

BioFlex® Body Jewelry

BioFlex® body jewelry is made from medical-grade polypropylene random copolymer (PP-R), in one piece with no joints or glued parts. It contains 0% metal and 0% nickel. It is flexible, can be steam autoclaved, and suits initial piercings and long-term healed wear.

BioFlex is medical-grade PP-R random copolymer; it is not PTFE. Patrick Poli is the creator of BioFlex® body jewelry.

Implant-Grade Titanium (ASTM F136 / ISO 5832-3)

Ti-6Al-4V ELI titanium contains no nickel in its chemical composition. Forms an immediate, stable titanium dioxide passivation layer.

Niobium (ASTM B392)

99.9% pure elemental niobium contains no nickel in its composition. Highly biocompatible and hypoallergenic.

Platinum (Pt 950)

High-purity platinum alloyed with ruthenium, iridium, or cobalt contains no nickel. Resistant to chemical attack.

Visit the Allergy Patch Test Tool

Side-by-Side Material Comparison Matrix

Compare two body jewelry materials directly across composition, passivation, EN 1811 migration behavior, initial piercing suitability, and autoclave compatibility.

Material A

Material B

Multi-Jurisdictional Nickel Regulatory Comparison

Compare statutory nickel standards across major international markets. Understand the critical distinction between jurisdictions regulating ion migration rate in artificial sweat versus total mass content.

Key International Takeaway for Studios & Importers

Total nickel percentage by weight (such as XRF spectroscopy) does NOT prove compliance in the European Union or Switzerland. EU law exclusively regulates the migration rate of nickel ions into synthetic sweat over one week under EN 1811:2023. An alloy containing 12% nickel can pass if passivated, while an alloy with 0.8% nickel can fail if unprotected.

Studio Jewelry File & Supplier Compliance Request

Studios operating in or purchasing from the European Union must maintain compliance documentation for every article or batch placed into pierced skin.

Studio Compliance Record (Keep per Article/Batch)

Record compliance documentation for your studio archives.

Studio Name

Article / SKU Reference *

Supplier / Manufacturer Name

Material Specification (e.g. ASTM F136, ASTM F138)

EN 1811:2023 test report issued by an accredited laboratory (ISO/IEC 17025 accredited). Exact article code / batch number on test report matches stock SKU. Stated numerical release rate is strictly below 0.2 µg/cm²/week for piercing jewelry (or below 0.5 µg/cm²/week for skin contact). For coated articles: Report confirms EN 12472 wear simulation was conducted prior to EN 1811 testing. Raw material mill test certificate verifying alloy standard.

Supplier Request: Copyable & Ready to Send

Generate a formal request letter for your jewelry supplier to obtain the necessary compliance documentation.

Select Request Template Type:

Supplier Contact / Company

Jewelry Items / Catalog Reference

Studio Jewelry Compliance Record

REACH Annex XVII Entry 27 & EN 1811:2023 Verification File

Studio: —

Date: —

Article / SKU: —

Supplier: —

Material Standard: —

Documentation Audit Checklist

EN 1811:2023 test report issued by an accredited laboratory (ISO/IEC 17025). Not Verified

Exact article code / batch reference matches test documentation. Not Verified

Stated numerical release rate is strictly below 0.2 µg/cm²/week. Not Verified

Coated items: Simulated wear under EN 12472 verified prior to EN 1811 testing. Not Verified

Raw material mill certificate verifying alloy standard (e.g. ASTM F136, ASTM F138). Not Verified

Compliance Verification & Sign-off

Responsible Studio Person: ______________________ Signature: ______________________ Date: ____________

A4 Archival Document — Preserved in studio records under REACH Annex XVII Entry 27 documentation requirements.

Studio Jewelry Compliance Record — Printout of user-entered studio data. Not an official regulatory certificate.