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2. Paper chromatography - Wikipedia

   en.wikipedia.org/wiki/Paper_chromatography

   Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires only small quantities of material. Separations in paper chromatography involve the principle of partition.

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5. What to know about after-Christmas sales from Amazon, Walmart ...

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   Walmart is offering clearance sales before the end of the year, with products like air fryers off 50% and artificial Christmas trees on sale for 70% off. FDA issues highest-level recall for Costco ...

6. Chromatography - Wikipedia

   en.wikipedia.org/wiki/Chromatography

   Paper chromatography is a technique that involves placing a small dot or line of sample solution onto a strip of chromatography paper. The paper is placed in a container with a shallow layer of solvent and sealed. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent.

7. Whatman plc - Wikipedia

   en.wikipedia.org/wiki/Whatman_plc

   Whatman plc is a Cytiva brand specialising in laboratory filtration products and separation technologies.. Whatman products cover a range of laboratory applications that require filtration, sample collection (cards and kits), blotting, lateral flow components and flow-through assays and other general laboratory accessories.

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9. What will be on sale during Walmart Deals? - AOL

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   Michael Kors Crossbody Handbag: Snag this timeless bag for less than $60 (a cool $230 discount) during Walmart Deals and watch her smile grow on Christmas morning. $59 at Walmart Explore More ...