Description The Cim-Tek 70111 FILTER 475MB-10 1IN Bio-Tek Phase Seperation Ext Length Key Features Detects phase separation in ethanol blends up to 25% Slows flow to notify the operator that water is present and action is required. Patented Multi-Fuel® media includes multiple layers of Microglass for increased retention, less resistance to fluid flow, and lower clean filter differential pressure