Design of funnel permits addition of solvents to flash chromatography columns without disturbing the silica-gel/packing layer. Lower end of the funnel is closed and the stem has a series of small holes through which the solvent drains.
Top of the funnel is 90mm in diameter with the stem size as listed.
Stem O.D.*length(mm) is 12*75.
The applicable joint is 24/40 or 35/20.
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