CAS 11113-61-4 appears in our catalog under these names: Dowex|r 50WX4 100-200 (H) , Dowex® 50 W X 4, 200-400 mesh, H+-form, 50 g, plastic, Dowex® 50 W X 4, 200-400 mesh, H+-form, 250 g, plastic, Dowex® 50 W X 4, 200-400 mesh, H+-form, 1 kg, plastic. Offered by: Thermo Scientific (Alfa Aesar), Roth. Available pack sizes: 1000g, 50g, 250g, 1kg.