PTFE evaporating dish: round shape, concave in the middle, used for evaporating liquid, concentrated solution or dry solid substances, with polished and smooth surface. characteristic: 1. Pure white appearance; 2. High temperature resistance: operating temperature - 200+250 , Short term resistance to 300 on hot plate 3. Low temperature resistance: 5% at - 196 4. Corrosion resistance: resistant to strong acid, alkali, aqua regia and various organic solvents; 5. It shall be used on asbestos net and shall not be exposed to open fire; 6. Resistance to atmospheric aging, radiation and low permeability; 7. Self lubrication: it has the smallest friction coefficient among plastics; 8. Surface non stickiness: it is a solid material with minimum surface energy; 9. Soft mechanical property, with very low surface energy; 10. No toxicity: It has physiological inertia.