Hirsch Funnelsfrom $5.02
Includes fixed perforated plate. Funnels are glazed on inner and outer surfaces except for the rim.
- • Thermal Shock Resistance - Average coefficient of expansion from 20°C to 200°C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1000°C. Every batch of porcelain is heat tested in our factory.
- • Glaze - No softening occurs up to 1000°C, and it is extremely white.
- • Resistance to Chemical Action - Resistance to acids and alkalies is excellent, except for hydrofluoric acid.