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The purpose of an NMR tube is to confine a liquid sample in a perfectly cylindrical volume in a magnetic  field. Since this description is based on mechanics, it is not surprising that NMR tubes have been described by structural parameters for many y..

In April 12th, the 4-day International analytica2024 Expo in Munich, Germany was successfully concluded. INNOTEG concluded its overseas debut with its bright booth image, rich product series and professional service quality.  Smart Lab ThemeAs a glob..

Case: In October 2022, the U. S. Food and Drug Administration (FDA) issued a recall notice saying that a U. S. food company was voluntarily recalling a chocolate sandwich cookies because it may have white plastic sheets.Food recalls caused by plastic..

Semen Zizyphi Spinosae  The jujube kernel for rhamliaceae plant jujube [Ziziphus jujuba Mill.var.spinosa（Bunge）Hu ex H.F. Chou] dry mature seeds, first contained in 'Shennong Materia Medica Classic', listed as the top grade, its taste sweet, sour, fl..

A magnetic stirrer is a laboratory instrument used for liquid mixing or simultaneous heating for mixing a low-viscosity liquid or solid-liquid mixture. It's basic principle is to use the principle of same-sex repulsion and opposite attraction of magn..