Laboy Glass Long Column Filter Funnel 85mm O.D., 300mm Length, Medium Porosity, 24/40 Joint, Borosilicate Glass

This is a modified chromatography column, with lower 24/40 joint and hose connections for vacuum. The pore diameter for the sealed in glass fritted is from 20 to 35 ¦I'm. Laboy glass are all made of high-quality borosilicate glass and made by hand-blowing to ensure uniform wall thickness. Since the chromatography column is used with positive air pressure, it is highly recommended that operator uses column behind a safety shield.

• Extra-wide 85mm fritted glass funnel for high-capacity vacuum and gravity filtration.
• Medium porosity frit suitable for bulk solid–liquid separations and preparative chemistry.
• 300mm long stem minimizes splashing and provides stable flow into deep receivers.
• 24/40 standard joint integrates with most 24/40 vacuum filtration systems and glassware.
• Hand-blown borosilicate 3.3 ensures durability, chemical resistance and easy cleaning for repeated use.