A desiccant dryer capable of maintaining a dew point of -40 °F (-40 °C) is recommended. If drying is done in pans or trays, put the resin in layers no more than 2 to 3 inches (5 to 8 cm) deep in drying trays. Dry for 24 hours at 250 °F, or 16 hours at 300 °F, or 8 hours at 350 °F. If drying at 350 °F (177 °C), limit drying time to 16 hours.