Tisch Brand SF18040 PM2.5 Membrane, PTFE 46.2mm with Support Ring, 2.0um, sequentially Numbered 50/

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Click here for the best price: https://amzn.to/4mZlNXj This is an Affiliate link Tisch Brand SF18040 PM2.5 Membrane, PTFE 46.2mm with Support Ring, 2.0um, sequentially Numbered 50/pk Meets The Requirements for EPA PM 2.5 Reference Method Under 40 CFR Part 50, Appendix L Tisch Brand SF18040 PM2.5 Membrane, PTFE 46.2mm with Support Ring, 2.0um, sequentially Numbered 50/pk Meets The Requirements for EPA PM 2.5 Reference Method Under 40 CFR Part 50, Appendix L This presentation contains images that were used under a Creative Commons License.