United Scientific Supplies JHF012 12ml Porcelain Hirsch Funnel

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 1050°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.