PYREX® Funnels, Büchner, filter, 175mm diameter sintered glass disc, porosity 1

Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A), Sintered glass filter discs comply with ISO 4793, Used for the filtration of solutions. No filter papers required, Available in a range of porosities (grades), Highly resistant to most corrosive reagents including ammonia and concentrated sulphuric acid