VST developed these multi-media syringe filters specifically for clarifying espresso prior to refractometer measurements. Also suitable for use with coffee ground for filter brewing using perforated metal or woven mesh filters. \n \nDesigned to provide fast and efficient filtration of aqueous and organic solutions, including Espresso. Multiple layered media includes glass fiber media pre-filter stacked with molded membrane to provide required clarification of espresso. Useful for testing and matching performance of single, double & triple espresso filters in espresso equipment during set up.