Designed for routine, repetitive applications for which an inexpensive products is acceptable, such as qualitative analysis. The cellulose filters have varied retention efficiencies, flow rates and loading capacities. Wet-strengthened for easy wet handling and prepleated for consistent, fast flow rates and minimal setup. Standard filter grades: 200, 211, 226 and 230. Wet-strengthened filter grades: 201 & 202.- Filter Paper, 25cm, Grade 802, 1000/pk