Material Testing
Flammability: GWT Class / Index
Glow-wire testing to determine ignition temperature class and flammability index.

Overview
What this service is
Glow-wire tests sit behind the safety case for a huge range of products — white goods, lighting, control equipment, and household appliances all reference a specific GWFI or GWIT class in their product-family standard.
We run the material-level Glow-Wire Flammability Index (GWFI) and Glow-Wire Ignition Temperature (GWIT) tests, plus end-product glow-wire tests where the standard demands them, and report the class achieved at each temperature step.
Scope
What's included
- Glow-Wire Flammability Index (GWFI): 550°C, 650°C, 750°C, 850°C, 960°C
- Glow-Wire Ignition Temperature (GWIT)
- End-product glow-wire test where required by the standard
- Sample conditioning per the standard
- Test report with the class achieved at each step
Deliverables
What you receive
Why it matters
The cost of skipping it
GWT classification is referenced directly in many product safety standards. The wrong class can block your product from entire market segments — white goods, lighting, and control equipment in particular.
Who it's for
Typical clients
Manufacturers of household appliances, lighting, controls, and any product whose product-family standard specifies a GWFI or GWIT class.
Process
How we work
- 01IntakeBrief call to scope the product, the market, and the documentation that already exists.
- 02AnalysisGap assessment against the applicable EU directives and harmonised standards.
- 03DeliveryFinished file, report, or test results — with a walkthrough call for your team.
- 04Follow-upCorrections and support during external audits or market surveillance.
FAQ
Common questions
Not sure where to start?
Book a 15-minute intro call to discuss your compliance needs.