Quick view View Item Whatman Filter Circles, 190mm Dia, Wet Strengthened Grade 91, 1000/pk Whatman Filter Circles, 190mm Dia, Wet Strengthened Grade 91, 1000/pk ParameterGrade 91 Qualitative Filter Paper Wet-Strengthened, circle, 190 mm Grade Grade 91 Grade Type Wet Strengthened Diameter 190 mm Typical Particle... Weight: 5.57 LBS View Item Quick view Qty in Cart: 0 Price: Subtotal: