A silicone sealant certificate is read the same way a test report is: against the job, not the name on the wall. ISO, RoHS and REACH govern different things and are not interchangeable. ISO 9001 is about the factory quality system, RoHS is about restricted substances in the electrical and electronics sector, and REACH is about chemicals placed on the European market. Which one matters depends on where the sealed component is going and what it touches, so the certificate has to match the order, not the brochure.
ISO 9001: the factory system
ISO 9001 is a quality management certificate, not a product certificate. It means the factory runs a documented system for mixing, filling, testing and handling non-conforming material, and that the system is audited by a third party. For a silicone sealant buyer it signals that the batch card and the calibration record are likely to be real and current. It does not certify the grade itself; the test report does that. So ISO 9001 and a grade report answer two separate questions.
RoHS and REACH: what they restrict
| Scheme | What it restricts | Where it applies |
|---|---|---|
| RoHS | Lead, mercury, cadmium and other listed substances | Electrical and electronic equipment |
| REACH | Substances of very high concern, listed on the candidate list | Chemicals placed on the EU market |
A silicone sealant used to pot a solar panel or seal a heater terminal may need RoHS; the same grade used on a facade does not. Reading the certificate against the application is the only way to use it correctly.
What to ask for in the certificate
- The certificate number and the scope it covers, not only the logo.
- The factory name on the certificate matches the supplier you ordered from.
- The date is current and the certificate has not lapsed.
- Confirm MOQ, lead time and whether OEM or private label keeps the certificate valid.
- Ask for a sample from the certified grade and test it before the full order, so the certificate and the formulation stay matched.
Our silicone sealant factory is ISO 9001 certified and we hold the RoHS and REACH documents that back the grades sold into those sectors. The certifications page and the test report guide show what sits behind a certificate.
Common certificate mistakes a buyer makes
The most common mistake is accepting a certificate number without the scope, because a factory can be ISO 9001 certified for its mixing hall and still make a grade that is not RoHS compliant for the sector it is sold into. The second mistake is reading the certificate date as the expiry of the product, when it is the expiry of the audit cycle. The third mistake is assuming a silicone sealant grade is REACH compliant for everything it might touch, when REACH applies to the substance placed on the market and not to every downstream use. Read the certificate against the end use and the compliance date, and keep the certificate and the test report beside each other.
