EISCO Buchner Funnel, 13cm I.D. - Polypropylene, 2 Parts - Designed for 11-12.5cm Filter Paper

Solid funnel. It works great but is just a touch too small for the 12.5mm filter papers at the base. I bought a size 11mm but now it may be too small. The base must be 12.25mm I wish it fit just a bit better.

Perfect size for what I do

This is a great value for your money. Obviously, a ceramic version would be better but those are too expensive. The size is perfect for my filter papers I currently have, though it would be nice if they sold them in a set. Definitely don't use strong acids with these since they are plastic but for most filtrations you will have no issues. It works well.

Works as it should, no issues, great item for filtering solutions

This works reasonably well with 11 cm filter paper. I purchased adapter cones to fit it to a filter flask. It separates easily for cleaning, although the interior stays pretty clean as long as the filtering went well. It does not seal as tightly as a porcelain funnel or hold quite as much vacuum, but it is closer than I expected, definitely makes a good seal, and is much cheaper for the size. After a few uses it seems to be holding up fine, and the funnel cleans up well even from coffee residue. The total capacity of the funnel is about 700-800 mL, so a 1 L filter flask works well with this.

Works great nice funnel easy to clean. Uses 94mm filter papers or standard size coffee filters.

Works perfectly! Great price too!

Works great for our Silver purification labs