Pharmaceutical manufacturing companies require nitrogen at varying flow rates and purities to suit a complex array of specialist processes:
Nitrogen is used as a pressurizing agent to test for leaks in pipelines and vessels. It is used in processes such as solvent drying, blanketing, inerting, sparging and nitrogen vacuum packing.
It is important to recognize that different processes require different levels of gas purity. Do not be misled by a “one spec suits all” approach if this is set at the default high purity level of liquid nitrogen. Liquid nitrogen, by nature of its energy intensive manufacturing process, it is almost always sold at 99.999% purity regardless. A compelling benefit of on-site generation is that purity levels can be controlled as appropriate thereby improving inefficiencies and lowering process costs.