Almost every filament supplier questionnaire includes RoHS. Almost none of them explain why. Understanding the scope makes you a better buyer — and stops you publishing claims you cannot defend.
What RoHS actually covers
RoHS restricts hazardous substances in electrical and electronic equipment. Filament is a plastic monofilament: it is not EEE, and it does not become EEE because it is used to print a part.
So why does the request keep arriving? Three reasons:
- Retailer policy — marketplaces and chains apply a blanket chemical-safety file to all suppliers.
- Template questionnaires — procurement teams reuse one supplier form across product categories.
- Genuine adjacent scope — if you sell a printer, an accessory with electronics, or a printed part that forms part of EEE, the equipment itself may be in scope even though the filament is not.
How to answer the request accurately
| Situation | Honest answer |
|---|---|
| Buyer asks for a RoHS statement on filament | Provide the supplier's restricted-substances declaration and note that filament is generally outside RoHS scope; the statement supports their file without over-claiming. |
| Buyer asks you to print "RoHS certified filament" | Recommend "RoHS declaration available" instead — the first phrasing implies a conformity assessment that did not happen. |
| Your printed part ships inside electronic equipment | Check the equipment-level obligations with your own compliance advisor; the filament declaration is evidence, not the whole answer. |
What to ask a supplier for instead
- A restricted-substances declaration naming the substance groups tested
- REACH declarations with an SVHC screening statement — see REACH SVHC screening
- Consumer-safety documentation where the SKU targets retail: CPSIA and California Prop 65
- TDS and SDS for the exact grade
Why this matters commercially
Over-claiming is a risk, not a selling point. A statement that says "RoHS certified" when no conformity assessment exists can unravel in a customer audit and cost you the account. A precise statement — restricted substances tested, declaration available, scope explained — survives scrutiny and often shortens the buyer's internal review because it answers the real question.
VOXFIL supplies restricted-substances declarations, REACH statements with SVHC screening, and CPSIA/CA65 documentation for consumer SKUs, and is explicit about what each document does and does not assert. See the Trust Center.
Frequently asked questions
Is 3D printer filament subject to RoHS?
RoHS applies to electrical and electronic equipment. Filament is a plastic monofilament and is generally outside that scope, although buyers and retailers often request a restricted-substances declaration as part of their supplier file.
Can a supplier say filament is 'RoHS certified'?
Be cautious. RoHS is a conformity obligation for in-scope equipment, not a certification scheme for filament. Accurate wording is 'restricted-substances declaration available' or 'tested against RoHS substance limits'.
What should I request instead of a RoHS certificate?
A restricted-substances declaration naming the substance groups, REACH declarations with SVHC screening, TDS/SDS for the grade, and consumer-safety documentation such as CPSIA/Prop 65 if you sell into retail.