Powder Systems Ltd. (PSL)

0.05-m2 High-Containment Filter Dryers
The 0.05-m2 high-containment filter dryers can accommodate cryogenic operations down to –196°C. The conventional base-plate filtration is enhanced with a sintered-mesh filter media built into the wall of the vessel, enabling unique cross-flow filtration. A variable-speed controlled agitator is fitted with metallic bellows offering a 125-mm manual raise and lower traverse. Product recovery is achieved by manually articulating the vessel body and discharging through the PSL ChargePoint high-containment powder transfer valve, ensuring that the entire process is fully contained. With a cake capacity of 6 L and a 12-L liquid volume, this filter dryer is ideal for research and development, pilot-scale production and clinical trials.

Small-Scale Filter Dryer
Suitable for multi-product kilo facilities, this lab-scale system has a 0.05 m2 filtration area, a 15-L liquid capacity, and typically 2–8-L wet cake capcity. Designed to handle batch sizes of 1–5 kg, the compact system can be easily moved and receive slurry liquid from multiple reactors. It achieves product containment with a top-mounted 100 mm split valve for vessel charging. Integrated into the frame, a tilting mechanism allows complete inversion of the vessel for contained powder discharge via the same split valve. A standard system can reach <10 µg/m3 containment, and ancillary components can make the system achieve <1 µg/m3. The unit’s base can be fitted with either filter cloth or sintered metallic mesh to increase flexibility.