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In order to quantify the count and size of subvisible particles in eye care products, the USP <789> test is carried out. This consists of utilizing a light obscuration particle counter and counting ...
STEMart's Particulate Matter Testing uses two methods, the Light Obscuration Particle Count test and the Microscopic Particle Count test. The former test is adapted from the United States Pharmacopeia ...
This past spring, the U.S. Pharmacopeia indicated that it was considering new guidelines for the determination of particulate matter in therapeutic formulations. Existing guidelines emphasize the use ...