E&B Coffee Basket 28ML 18/20 gm Super-Fine Filter Number B702TH28SF comes with the E & B LAB Super-Fine filter, created from the idea of making a filter with higher filtration strength than standards. Usually, filtration ranges between 250 and 350 microns. The ultra-fine filter has a filtration capacity of 170 microns. To achieve this performance, we integrated a 170-micron membrane for IMS hole technology. Shape of the borders: Ø 70 mm (B70) Body: diameter 60 mm for messing with diameter 58 mm No equivalent Filtration Ultra-fine filter membrane 170 microns hole perforated area: diameter 40 mm number of holes: 565 The number and distribution of holes are designed to support the filter membrane and balance flow. Finishing: wet vibratory finish with ceramic inserts and drying using corn cobs. Polishing: polishing and material preparation. Electro-polishing: a smooth surface with unparalleled hygienic and non-contaminated properties.