说实话核磁管是我们合成人日常工作中必不可少的，如何快速洗涤并且洗涤干净也是一门学问。这不2016年，来自法国的thanh binh nguyen在美国化学会期刊org. process res. dev.发表论文，讨论如何清洗大量核磁管。具体的清洗步骤和流程如下，大家有兴趣可下文献详细看看（org. process res. dev.2016, 20, 319−319，doi: 10.1021/acs.oprd.6b00001）：first, nmr tubes to be washed are emptied and put upside down inside a beaker (step a). cleaning solvent or solution (acetone, methanol, ethanol, water, nitric acid, aqueous naoh solution, etc.) is next added to the beaker (about 4 ml for each tube). the beaker is put inside the vacuum desiccator (step b). a vacuum is subsequently applied to the system to remove air inside the tubes. the desiccator is next vented with air, and solvent will raise and clean inside the tubes. the vacuum/air vent cycle is repeated 3−4 times to remove all the air inside the tubes. the whole system can be left for one night for better results. sonication of the beaker can also be performed if necessary as an aid to cleaning (step c). new solvent is changed, and the cleaning isfinished with clean acetone (step d). this acetone can be used for the next time of cleaning. the number of nmr tubes that can be cleaned at once depends only on the size of the beaker and the desiccator.caution: the desiccator should be opened in fume hoods. it is also recommended that the usual precautions (goggles, gloves, etc.) are taken. the nmr tubes can also be placed directly in the desiccator.
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