Chemical Spillage Pads Spilchoice Std. Pack of 20 , Secondary Description: Spilchoice Standard. Absorbency Litres per pad = 0.4. Designed to absorb aggressive liquids such as acids or alkalis. Highly absorbent and fast acting. Ideal for indoor and outdoor use. Bonded and perforated for improved strength . Grade: n/a; UN Number : NR; Cas No: n/a