VWR Grade 707 Blotting Pad Size: 11x18cm. Weight: 703g/m2. Thickness: 2.6mm. Hertzberg Flow Rate: 120sec./100mL at 10cm head of water. Klemm Wicking Rate Test: 96sec./7.5cm rise. Assures continuous contact of buffer. Made of 100% cotton fiber. Produced us