Hirsch Funnels, Porcelain
Porcelain funnels feature fixed perforated plates. 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 1050C. Every batch of porcelain is heat tested in our factory.
- Glaze - No softening occurs up to 1000C, and it is extremely white.
- Resistance to Chemical Action - Resistance to acids and alkalies is excellent, except for hydrofluoric acid.
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