As at the end of May 2022, more than 1.28 billion COVID-19 doses had been administered in Europe since this unprecedented immunisation campaign began in 2020 . Both here and worldwide, there is no doubt that the pandemic vaccination programme has done much to raise the profile of research into, and deployment of liquid pharmaceutical drugs. The liquid pharmaceutical market has been growing due to the importance of biologics and cancer drugs that are produced more effectively in liquid form. Historically drugs were produced in solid form, which takes years of development to ensure shelf-life stable solid doses.