These are a bit expensive for the price but you definitely get what you pay for, they work great and last much better than cheap filter paper.
Polyurethane condoms 0.01 mm Sagami Original 0.01 - 5 pcs
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UPlama Qualitative Quantitative Cellulose Filtration
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π¬ Lab Supply Filtration Membrane Solutions: Enhanced Diameter for Optimum Performance
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NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
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