The E&B Lab is the Creative Laboratory of IMS, the company famous for their high precision filter baskets .The lab's focus is to be a place where ideas are experimented, new products are designed and produced with an artisanal approach and care for details and materials. The E&B Super-Fine filter comes from the idea of creating a filter basket with a higher filtration power than normal to enable a higher TDS extraction. Usually the filtration is between 250 and 350-μm., the super-fine filter has a filtration capacity of 170-μm. Specs: Border: Ø 70 mm (B70) Body: Ø 60 mm for Ø 58 mm tamper Design: Ridgeless SuperFine filtering membrane 170 µm Perforated Area: Ø 40 mm Number of holes: 565 The number and distribution of the holes are designed to support the filtering membrane and to balance the flow.