QWORK Borosilicate Glass 500ml Buchner Filtering Funnel and 1000 mL Erlenmeyer Flask, with Standard 24/40 Joint

Hands down best deal ever. The best deal you'd get on the funnel alone is $29.99, and same for the 1L jointed Erlenmeyer flasks. I read one person received low quality glass, but I've purchased 2x and was pleasantly surprised by the high quality. (I broke the first flask but still use the funnel). I'll be purchasing more as soon as I inevitably drop something while cleaning... what I mean is I wouldn't trust this glass to blowtorch directly to warm up when things crash out, but besides the frit being about ⅔ the normal thickness, they didn't skimp on the structural glass. I think the frit is ideal for most vacuum filtration, as filling it without vacuum is enough for continuous flow until the particles begin to pack down.

Works great and just as good as a setup you would use in a college chemistry lab. However, be warned the moment you buy something like this you go on a list and your phone and computers will likely get exploited for passive surveillance. It’s a shame chemistry is considering to be such an evil thing nowadays.

Excellent quality

First - the glass is not 100% lab grade. It may have some inclusions and some internal chips. Second - the funnel under vacuum is amazing. But I think that's true of any simular funnel. Got this for the size of the cup. The built in separator is kind of silly and hard to clean. Not really suitable for chemicals or powder filtration unless you put more filters in it and prevent the fines from passing throguh. I suppose this is similar for any such funnel and a known lab issue.

Fantastic quality, works amazing.

Flask arrived with several bubbles and streaks

This is probably the best deal on Amazon for a Buckner funnel aka vacuum filtration. So far so good. Has a very large circumference for 500 ml

Works well. Filters out particulates. Seals well.