Vst Precision Filter Basket 25Gr Ridged - English

VST Precision filter baskets in a capacity of 15, 18, 20 and 22 grams. Official 2012 & 2013 World Championship Barista. Selected by the USBC & UKBC for 2013 Regional & National Competitions (20 grams pointless) Features: VST precision filters deliver consistent extraction performance across a wide concentration range with less sediment. Designed to extract well as ristretto, normal or lungo with minimal or no change in grind at a fixed dose. The filters are tuned to a total square area of +/- 5% to ensure identical performance. (typical variations of standard filters range from 50-200% of the nominal open square area) On all VST filters 1 year warranty on DEFECTS. The micro openings are manufactured using a new micro-machine and finishing process. 100% of the holes are measured on each filter for min./max range limits for surface and diameter with an accuracy of +/- 20 µm. All holes are measured for roundness, placement, square area and blocked holes. The hole pattern is centered to +/- 1.0 mm and the placement is orientated for an even suction over the entire puck. The anti-wear design ensures uniform performance throughout the life of the product. Improved structural integrity, resistant to pump cycle deflection without premature fatigue errors.