Porvair Filtration Group’s PTFE membrane filters are designed to resist repeated steam cycles at high temperatures. The Fluorofil Plus filter cartridges have been tested to withstand 250 steam sterilisation cycles for one hour at temperatures of 142°C.

The cartridges can also withstand steaming in the reverse flow direction at 142°C, providing effective, dependable, all-round performance.

Fermentation processes require a high degree of security and productivity – and Porvair believes that the ability to withstand steam sterilisation for longer periods and at higher temperatures results in better process security and a decrease in unnecessary downtime.

Porvair, which received the Queen’s Award for Enterprise in International Trade last year, says that its Fluorofil Plus filters offer a number of advantages over standard filters, such as a lower pressure drop and more robust performance in fermentation processes. The filters can be steam sterilised, tested, and used multiple times. 

The filters are validated to retain bacteria in both liquids and gases, in accordance with the most stringent pharmaceutical industry standards and recommendations. They are used in applications such as: compressed air, fine chemicals and solvents, pure water supply systems (WFI), powder handling and tableting, and cell culture.

Dr Mozamal Nazir, Porvair’s senior scientist, said: “Our Fluorofil filters are capable of delivering flow at a minimal pressure drop. This, together with their durability, has resulted in our customers benefitting from lower energy costs and a reduction in downtime.”