🔬 Elevate your filtration game with precision and purity!
StonyLab Qualitative Filter Paper offers 94 mm diameter cellulose circles with a slow flow rate of 70-140 seconds, retaining particles larger than 10 microns. With ultra-low ash content (≤0.15%), these filters ensure high purity and are fully compatible with StonyLab Buchner Filtering Funnels, making them ideal for precise laboratory filtration tasks.
A**N
Essential for every lab
The right size for my filter funnel. Cleared the solution right up.
L**�
great quality
filter papers were great good quality and were just what i needed for filtering fine gold particles
D**G
Exactly what I needed
These work perfectly for my geology lab to chemically extract copper from malachite. Thank you! Please keep these available for future purchases!
G**A
Great filters, recommend using a vacuum though.
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.
S**N
Very good product
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
C**Z
Learn the difference between qualitative and quantitative as well as the particle size.
"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.
Trustpilot
2 months ago
3 weeks ago