Donaldson presents a series of sterile filter elements for process air treatment. The heart of the filter elements is the deep filter medium with a hydrophobic plasma coating. The water-repellent coating gives the elements higher resistance in CIP processes and also reduces the differential pressure during drying after steam sterilisation. For the user, this means high reliability and a long service life of the elements under the most diverse operating conditions. The pleating of the filter medium also increases the effective filter area with the result that a very high particle absorbance capacity is achieved and the differential pressure remains constant over long periods in use. Designated P-SRF N, the elements achieve a high separation rate of 99.99998 % with regard to oil droplets with 0.2 μm diameter (DOP test). The filter was successfully tested by an independent institute for the filtration of bacteria and viruses/phages. It can be used in a temperature range of 20 to 200 °C and is suitable for steam sterilisation as well as sterilisation with H2O2. Ten different sizes are available for flow rates from 60 to 3000 m³/h.
cpp 453
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