StonyLab Borosilicate Glass Buchner Filtering Funnel with Coarse Frit(G1), 56mm Inner-Diameter, 60mm Depth, with 24/40 Standard Taper Inner Joint and Vacuum Serrated Tubulation (100ml)

Great price, great product. It was properly protected and reached me unharmed. Great company to do business with. It works great 👍

Shockingly high quality, especially for this price. 10-20 years ago I'd have likely paid like 4-5x as much or more at a local brick & mortar supplier for a piece like this. The frit disk level and the cylinder diameter/regularity are as close to perfect as I could ask for. Nice thick and heavy boro throughout & *excellent* joints. Exactly what I wanted, withstands plenty of external pressure and with some slow qual paper it filtered clear a particular type of solution I've been trying to clarify for like a year, in a matter of minutes. Since it's a very fast G1 I can throw whatever sort of 75mm filter paper I want on it and voila, it's medium or fine, or quant if necessary, etc. and it's a very easy and affordable size to find. I have several Stonylab pieces now including stuff like boiling flasks and they've all been so good that I don't plan to buy lab glass from any other manufacturer any time soon. As an amateur scientific glass blower of many years myself, I find such strong joints with no apparent warp or wobble in any position on so many pieces in a row is REALLY impressive; same with this super flat and level frit disk. I think I'm pretty decent, but I won't hesitate to admit that this relatively super cheap piece is probably beyond my skill level and I would laugh at anyone that asked me to make one for this price, then refer them to this listing. Should I ever break this Büchner, I'll immediately order another of the same. Thank you Stonylab, will be back, soon & often!

Fantastic

Great piece of glass. Worked better than I expected. It's slow to filter if you don't have a vacuum pump. Depending on what you are filtering it can be tough to clean. But overall it's a nice well made piece of glass work.

It was good quality

Seems well made, and it works great. Although the description says it's a 105mm disc, a 90 mm filter fits perfectly.

The frit is sealed/mounted in the cup at an angle. Since it's a GO coarse frit I'm using the quantitative filter papers to help get particulates out of the frit but due to the poor placement of the frit, particulates always get through and saturate the frit on the higher side which makes cleaning some chemicals impossible.

It is a very good glass buchner filtering funnel, quality is great, size also fits with flask. Easy to use and wash.