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When should I use a Screw Cap vs. a JY Valve NMR tube?

April 26, 2017cap jy NMR screw tube valve vs

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When should I use a Screw Cap vs. a JY Valve NMR tube?

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Both of these types of NMR tubes are used for protecting samples from atmospheric gases. The JY valved tube offers greater sealing ability under vacuum and pressure applications. The screw cap tube should only be used to seal samples under ambient pressure and temperature conditions.