Wilmad Omni-Fit valve NMR tubes are designed for easy injection of chemicals through a gas-tight syringe for air sensitive samples without using a glove box. The Omni-Fit Tube consists of a 507-PP tube topped by a sturdy 2" section of medium-walled tubing which supports the valve system. Due to the nature of glass, Extreme Caution should be exercised when using at elevated or reduced pressures as performance of tubes under pressure or vacuum cannot be guaranteed. Adequate safety shielding should always be used when working in these conditions..
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