Cellulose acetate, white. - Resistant to steam sterilisation up to 134 °C or to dry heat up to 180 °C. Very slow adsorption (important when filtering proteinaqueous solutions). Suitable for particle removal and ultracleaning of aqueous solutions, methanol, ethanol, high-grade alcohols and residue analysis of fuels and oils. The extractable content of these filters make up less than 1 % of their weight. Cellulose acetate, white. - Resistant to steam sterilisation up to 134 °C or to dry heat up to 180 °C. Very slow adsorption (important when filtering proteinaqueous solutions). Suitable for particle removal and ultracleaning of aqueous solutions, methanol, ethanol, high-grade alcohols and residue analysis of fuels and oils. The extractable content of these filters make up less than 1 % of their weight.