stonylab Qualitative Filter Paper, 100 Packs Slow Flow Rate Cellulose Filter Paper Circles with 10 Micron Particle Retention, 125 mm Diameter

These fit nicely into the bottom of our 54mm espresso machine portafilter Some influencer said paper filters cut out a component of coffee that can increase LDL & cholesterol but all I know is that with one of these in the bottom, my espresso tastes a bit smoother and no less intense. Also, bc the grounds no longer get into the tiny holes in the bottom of the portafilter, the brew comes out –> faster <– than before so I now use a finer grind. Nice & faster!

filter papers were great good quality and were just what i needed for filtering fine gold particles

These work perfectly for my geology lab to chemically extract copper from malachite. Thank you! Please keep these available for future purchases!

The Stony Lab 94mm filters do not fit the 100mm StonyLab ceramic Buchner funnel. even though site says they do.

The filters do exactly what they're intended to do, but due to the slow flow rate I can't imagine using gravity filtration exclusively, use a vaccume apparatus. Ps: stonylabs, make the same filters but with a smaller pore size I would love you.

I was sent an opened package that was definitely a returned, and I was charged for a brand new box. Very, very disappointed in this vendor

"Quantitative Filter Papers/ Hardened Filter Papers are used for quantitative and gravimetric analyses where the precipitate is to be recovered, as well as for pressure or vacuum filtration. Qualitative Filter Papers are used for qualitative analytical techniques to separate, determine and identify materials." Also pay attention to particle size. Other than that. They work as they should. Bang for buck purchase.

Does it's job, 5 out of 5 stars without doubt. But then again, it's Stonylab so you know it won't let you down.

Filtros demasiado gruesos y no traspasa el aceite. No cumple su función

J'utilise souvent.

I brought these to test the FE of a waste water treatment plant. I needed them quickly as our usual suppliers were out of stock of the ones we use normally. These are a little difficult to work with but the product itself is OK a little cheap feeling but saved our bacon for a few days.

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