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Research and Testing

Resistance to solvents test

Chemicals on the road are commonplace.

From polish, to washer fluid, road tar and grit salt, all sorts of chemicals can end up in contact with a plate.

The resistance to solvents test checks how a plate responds to these chemicals.

How are plates tested?

The front of a plate is wiped with two different cotton cloths saturated with paraffin and white spirit-based solvents (both of which must conform with their own British Standards) and left for five minutes for the solvents to take effect. After 5 minutes, a plate can’t show any damage.

What makes a fail?

- Softening
- Dissolving
- Other ‘deleterious effects’.