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⚡ Filter smarter, not harder — precision meets speed in every circle!
StonyLab Quantitative Filter Paper Circles deliver precise 94mm diameter filtration with 20 micron particle retention and a fast 35-70 second filtration speed. Designed with ultra-low ash content (≤0.01%) for minimal residue, these cellulose filters are perfect for efficient, clean lab work and are fully compatible with StonyLab Porcelain Buchner Funnels. Ideal for professionals seeking reliable, cost-effective filtration solutions.

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