constructed with heavy uniform walls and molded rims and fire polished stems to
give a long service life. The 58-degree funnel angle is a Kimble exclusive,
formed to an exact angle for rapid filtration. It is more effective than 60 °
angle funnels because the cone is suspended by its uppermost edge, leaving most
of the conical area for filtration. Designed from ASTM specification E1095,
Type 1, Class A requirements.