TLC Plastic Sheets, Average particle size is 15μm with a 5-20μm distribution, Each

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Sheet size: 20 x 20cm† PEI (polyethyleneimine) should be stored at 4°C (39°F). If stored at room temperature, PEI plates may turn slightly yellow, which could affect separation. To minimize yellow color, predevelop in distilled water.CertificationsISO 9001:2000