The Nonwovens Institute at North Carolina State University highlighted its filtration testing services during Filtration 2018.

For water filtration, its swimming pool/spa filter tester is a custom-designed instrument used for evaluation swimming pool/spa filter media based on NSF 50 standard, in which Sil-co-Sil 106 is used for challenging particulate matter. Effective sample diameter is 7cm and a typical face velocity is 0.068 cm/s which are equivalent to 1 gal/min/ft2. This tester measures turbidity and pressure drop at each turn-over and then a turn-over reduction (TR) ratio is calculated as a result.

Meanwhile, its Dead-End liquid filter tester is a custom-designed instrument in which monodisperse particles with a diameter range of 1-20 μm are used as a challenging material for evaluating filter efficiency and applied pressure is controlled to measure water permeability of sample.

Additional capabilities from the Institute include a Beckman Coulter Multisizer 4, which is a benchtop analyzer capable of measuring size distribution, volume and surface area for particle sizes ranging from 0.4 μm to 1600 μm. And, its Espec BTL-344 Environmental Chamber can achieve temperature ranges of -20C to 180C while maintaining a humidity in the range of 10-95%.