Monthly Archives: August 2018

Sterlitech offers bench-scale membrane test cells that can be used for a variety of filtration applications. The Developer series are the largest cells used with Sepa size flat sheet membrane coupons, i.e. membrane active area of 140 cm²/24 in². The Explorer series is used with CF042 size flat sheet membranes, i.e. membrane active area of 42 cm²/6.5 in². The Innovator series are the smallest cells used with CF016 size flat sheet membranes, i.e. membrane active area of 20.6 cm²/3.2 in². All three series of cells are available in a  variety of material of construction, including: Stainless steel, Hastelloy, Delrin, PTFE, Acrylic.

Because they have similar outward appearance, it is easy to presume that the various microporous membrane filters and flat sheet membrane filters offered by Sterlitech have similar pore structures.  Some consider symmetry to be the epitome of beauty, but with respect to filtration, it’s all relative.  In reality, there is a rich variety of pore structure morphologies resulting from the techniques and materials used to manufacture the membranes.

For the microporous membrane filters, the pore structures range from the essentially two-dimensional screen-like structures of the polycarbonate and polyester track-etch membranes, to the node and tendril structures of the expanded PTFE

Sterlitech is introducing flat sheet membranes from Fluid Technology Solutions to expand our line of Forward Osmosis membrane products. The FTSH2O™ flat sheet membranes are constructed from low-fouling cellulose triacetate (CTA) material. They also present the benefit of being able to backwash to restore membrane performance.

FTSH2O™ FO membranes are ideal for applications where the feed stream contains high levels of suspended solids or high salinity. Use of FO membranes enables the treatment of these feed streams using osmotic pressure, therefore eliminating the need for the extensive pre-treatment and high hydraulic pressures involved in pressure-driven treatment processes. This results in both lower capital and operating expenditure for the filtration system.

These new mem