The Vector Manual Blaine Air Permeability Tester determines the fineness of Portland cement—and similar powders like lime—by measuring their specific surface area in cm²/g. Compliant with EN 196-6 and equivalent to ASTM, AASHTO and BS methods, this compact instrument uses a stainless-steel test cell and plunger, an accurately mounted U-tube manometer and a rubber aspirator to drive airflow through filter-paper disks. It delivers reliable, repeatable Blaine values for quality control in cement and materials laboratories.