Advantec Glass Fiber Depth Filters feature high-loading capacity, fast flow rates, are highly resistant to chemical attack, and biologically inert. General purpose and clarifying filtration grades. Binder-free and thermostable to 500°C.Grade GC50 is a thin filter recommended as a prefilter for membrane or suspended solids and pollutants in water. Low absorption makes this an ideal filter for scintillation counting. High Collection Efficiency(DOP) of 99.99%. Nominal Rating 0.5µm.