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)
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Instead of going into the vacuum via the sidearm, the filtrate can go down into a flask thanks to the thin tube.
Because the glass frit is porous, no filter paper is required.
It should be 73, dear customer. 5mm. Thank you, J. br> D Team.
Dear Customer,br>The item you requested should be able to meet your requirements. Coarse Frit (G1) is a filtration of 80 to 120 microns. Also available are 60ml, 100ml, 250ml, and 500ml bottles. Thank you very much, Lizzy L.
Selected User Reviews For 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)
Surprisingly good quality for the price. I would have paid at least 4-figures 20 years ago. At a local brick and mortar store, you can expect to pay five times as much or more. For a project like this, you'll need a mortar supplier. The level of the frit disk and the diameter/regularity of the cylinder are as close to perfect as I could hope for. Throughout, there is a nice thick and heavy boro. Joints that are *excellent*. It did exactly what I needed it to do, withstanding a lot of external pressure and filtering clear a specific type of solution I'd been trying to clarify for a year in a matter of minutes using some slow qual paper. Because it's a fast G1, I can use any 75mm filter paper I want and it'll be medium or fine, or quant if needed, etc. , and it's a very easy and affordable size to find. I now own several Stonylab pieces, including boiling flasks, and they're all so good that I won't be buying lab glass from anyone else anytime soon. As a long-time amateur scientific glass blower, I find such strong joints with no apparent warp or wobble in any position on so many pieces in a row, as well as this super flat and level frit disk, to be truly impressive. I consider myself to be fairly competent, but I'll admit that this relatively low-cost piece is likely beyond my skill level, and I'd laugh at anyone who asked me to make one for this price and then directed them to this listing. If I ever break this Büchner, I'll order a replacement right away. Thank you, Stonylab; we'll be in touch again soon. often!.
It worked perfectly with a 16inHg vacuum pump for separating solids from an ethanol extraction. Cleaning is difficult, but this is to be expected.
Too costly for a one-time use funnel. An angle is used to seal/mount the frit in the cup. I'm using the quantitative filter papers to help get particulates out of the frit because it's a GO coarse frit, but due to the frit's poor placement, particulates always get through and saturate the frit on the higher side, making cleaning some chemicals impossible.
While cleaning them, I broke two of them in a week because the tube in the middle is wayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy When I first broke it, I assumed I had been too rough with it and took ownership of it. I took extra precautions with the second one and avoided applying any pressure. br>br>The frit is also extremely difficult to clean; I soaked it in HCL and NaOH for several hours and still couldn't get all of it out. Cleaning most sintered frits is difficult, but it shouldn't be this difficult, especially with the coarsest option available.
This is a good example of functionality. It fits perfectly in my flask and performs admirably. My only complaint is that it came cracked. The piece has a 3" long crack running through it. I've used it a half-dozen times now, but I always handle it with extreme caution because I know that crack is just one bump away from becoming complete.
This is a fantastic glass piece. I was surprised at how well it worked. If you don't have a vacuum pump, the filtering process is slow. Cleaning can be difficult depending on what you're filtering. But it's a nice, well-made piece of glass work overall.
With no problems, it fit perfectly in my existing 24/40 glassware.
Unfortunately, the glass funnel broke at the filter's edge, which leads me to believe that there was a manufacturing flaw that caused the glass to weaken at that point, resulting in clean separation. I used the funnel twice, but I didn't return it within the 30-day period. You might want to think about something else.
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