WK10 grades (methacrylic-type) are weak acid cation exchange resins having carboxylic acid functionalities. They have a pK value of approximately 6. WK10 has a high reaction rate, and WK11 has a high total exchange capacity. These grades are mainly used for special applications such as purification of pharmaceuticals, foods and organic chemicals. WT01S has a high reaction rate and high adsorption capacity. It is mainly used for the purification of pharmaceuticals and foods. WT01S is offered in 100-300 μm particle distribution.