United Scientific Supply Buchner Funnel,Porcelain

United Scientific Supply Porcelain Buchner funnels include fixed perforated plates Funnels are glazed on inner and outer surfaces except for the rims Thermal Shock ResistanceВ- average coefficient of expansion from 20В Degree C to 200В Degree C is 356 x 10-5, gradually increasing to 469 x 10-5Вat 1050В Degree C Every batch of porcelain is heat tested in our factory GlazeВ- No softening occurs up to 1000В Degree C, and it is extremely white Resistance to Chemical ActionВ- Resistance to acids and alkalies is excellent, except for hydrofluoric acid - USS