PYREX® Extraction Thimble, 20mm diameter sintered disc, porosity 1, 26x95mm

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, More chemically durable than cellulose paper extraction thimbles, Useful for applications where the extracted material needs to be weighed