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| Term | Description |
|---|---|
| Equiviscous temperature (EVT) for coal tar | The recommended EVT for roofing coal tar (ASTM D450, Type I or III) is the temperature at which the coal tar’s apparent viscosity is 25 centipoise. |
| Term | Description |
|---|---|
| Equiviscous temperature (EVT) for coal tar | The recommended EVT for roofing coal tar (ASTM D450, Type I or III) is the temperature at which the coal tar’s apparent viscosity is 25 centipoise. |