PERMASET Print Retarder is normally added at 1–3% of the total volume of product (i.e. 10–30 mL per 1 L of PERMASET Ink). Due to varying temperature, humidity and other conditions, it is difficult to predict the actual amount of PERMASET Print Retarder required. Generally, the higher the temperature, the lower the humidity and the higher the airflow of air in the printing environment, then the higher the amount of PERMASET Print Retarder required.