Materials glossary / Standard and mark
CE mark (EN ISO 12312-1)
On the label: CE mark · Standard and mark
What it is
The European sunglass standard, which also sets lens categories 0 to 4; a CE mark on US-sold sunglasses means the maker claims that test.
Standard and marks: The marks, tests and laws behind the words on a label: karat stamps, UV400, ANSI Z80.3, the FTC Jewelry Guides, Prop 65.
In the research
9 PubMed papers mention it with jewelry, allergy, eyewear or UV; the three most recent:
- Patent analysis of digital sensors for continuous glucose monitoring · Frontiers in public health, 2023
- History of breast implants: Back to the future · JPRAS open, 2022
- Medical devices in allergy practice · The World Allergy Organization journal, 2020
A paper is a paper, not a verdict: titles are listed so you can read them, and a study on one fabric or one filter says little about the piece in your hand.
Other standard and marks
Clasp & Lens describes materials from the public record and does not appraise, grade or test pieces; what a listing states is the supplier's statement. If a piece causes a rash, take it off; a reaction that spreads or blisters is a doctor's question, and sunglasses are no substitute for impact-rated eye protection where that is required.