Another customization available on the sampler is to have membrane filtration at the sampling point.

The filter unit is cleaned in the laboratory and sterilized in a steamer or autoclaved. After sterilization the filter unit is allowed to cool. In a sterile environment the unit is opened and the membrane inserted into the filter. The unit is then wrapped in aluminum foil, transport to the sampling site and connected to the sampler.

The sampler is cleaned as normal during the CIP process, and the filter unit is attached after cleaning. The sample is then taken during the regular sampling process, preferably in continuous sampling intervals.

Benefits of this filtration method: 
The overall quantity filtered is greater than the quantity filtered in a laboratory.

During the sampling process product quantities of around 4L can flow through the membrane filter without blockage.

Standard quantity in a laboratory is around 2000 ml. These quantities are influenced by the viscosity of the products being sampled. Overall a more representative sample is taken and there is a time savings in the laboratory.