Where drying in vacuum over a desiccant is directed in the individual monograph, a vacuum desiccator or a vacuum drying pistol, or other suitable vacuum drying apparatus, is to be used.

• 要是按着单独文献报道中做真空干燥失重，应该使用这些文献中要求采用的真空干燥器、真空干燥枪或者其他的真空干燥设备。