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Tag: 325-mesh screen

Zochem Continually Improves 325 Mesh Retains in Zinc Oxide

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An important specification parameter in the determination of zinc oxide (ZnO) quality is the 325 mesh or 44 micron (µm) sieve test. Testing for oversized zinc oxide particles is accomplished by passing the powder through a screen that has openings precisely calibrated in microns. Figure 1 below shows a 325 U.S. mesh sieve. Each square […]

The Inside Story of the Industry’s Highest QC Standards for Zinc Oxide.

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Zochem customers have come to appreciate the quality and consistency of our products, but did you ever wonder how we maintain such tight standards? Certainly, our state-of-the-art manufacturing and packaging technologies are major contributors. However, there is another critical part of our processes that hasn’t received a lot of attention, our QC labs. Mona Ghanam […]