VST's new precision filters deliver consistent extraction performance over a wide range of concentration with reduced sediment and are warranted for zero defects.  Each VST Precision Espresso Filter is designed to brew properly as a Normale, Ristretto or Lungo within a narrow gram capacity range. Experience uniform extractions across all groups for the first time - permanently. The essential espresso filter for those in search of the ultimate cup.

Features

•   VST's precision filters deliver consistent extraction performance over a wide range of concentration with reduced sediment
•   Designed to extract properly as a ristretto, normale or lungo with minimal or no change in grind setting at a fixed dose
•   Filters are matched for total square area to +/- 5% to ensure identical performance
•   Holes are fabricated using a new micro-machine and finishing process
•   100% of holes are measured on every filter for min/max range limits on area and diameter to a precision of +/- 20 µm (individual QC report provided with every filter)
•   All holes are measured for circularity, placement, square area and blocked holes
•   Hole pattern is centered to +/- 1.0 mm and placement is oriented for uniform extraction throughout the entire puck
•   Wide outlet angle to prevent filters from clogging, anti-wear design ensures uniform performance for life of product