PSL’s Filter Dryers are designed to provide optimum levels of performance, safety and quality.


The Agitated Nutsche Filter dryers include specific design features for maximum productivity such as:

CIP (Clean-In-Place) and reflux cleaning achieving typically less than 2.5ppm; unique underplate heating systems for highly efficient drying; highly contained product discharge within a PSL isolator; tapered filter plates and seal design enabling minimum product retention between filter plate and vessel sidewall; and totally sealed single piece agitators with differential mixing providing homogeneity and uniformed drying.

PSL’s filter dryers range from lab scale synthesis to kilo-lab and pilot plant operations through to large scale commercial production, for easy and direct scale-up of the process. The lab sizes agitated nutsche filter dryer can be in glass (the GFD®) with 0.002m² to 0.05m² filtration areas.

Larger filter dryers range from 0.05m² up to more than 2.5m² filtration areas. They can be built to meet the strict manufacturing requirements of aseptic/sterile processes utilising gas lift-off mechanical seals, unique offloading designs, CIP and SIP (Steam-In-Place) capabilities.

Filter dryer Internal


PSL’s High Containment Glovebox Isolators can be incorporated for the safe handling of highly potent APIs or Cytotoxic compounds. This total process solution enables safe product offloading, contained sampling and totalheel recovery for maximum product yield, all designed and integrated by PSL.

We are proud of the robust performance of our filtration and drying systems and continually works closely with key partners and customers to accelerate process development and create the most reliable and ergonomic solutions. PSL has been supporting pharmaceutical, biopharmaceutical, chemical and laboratory industries for 23 years.


 PSL Filter Dryer options: 

– Laboratory to production scale sizes      – Containment to nanogram levels

– Sterile option available     – Stainless steel 316L or Alloy C22 body construction


 – cGMP       – CIP, SIP and Reflux cleaning       – Full vacuum    – Excellent heat transfer   –  Pressure control

– Ergonomically considered design     – Integral dust collector       – High containment isolation technology


Or Contact PSL directly with any questions

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