AMSORB® PLUS is a new generation carbon dioxide absorbent, free from strong alkali metal hydroxides. It utilises calcium hydroxide (Ca(OH)2) as the active base with minor constituents that promote speed and capacity of absorption. AMSORB® PLUS is specifically designed for low and minimal flow anaesthesia. Its absorption capacity, intensity and uniformity of colour change have been improved from the original AMSORB®. The chemical composition remains unaltered but the manufacturing process has been carefully developed to deliver enhanced absorption capacity. AMSORB® PLUS remains the world’s only carbon dioxide absorbent capable of complete prevention of anaesthetic degradation. AMSORB® PLUS is the safest absorbent available. Many conventional soda limes, and even some new generation absorbents, claim suitability for safe low flow anaesthesia. However, many of these still contain sodium hydroxide (NaOH) and some potassium hydroxide (KOH). Research1 has shown that the presence of sodium hydroxide, at any level, provides the basis for anaesthetic agent dehalogenation. AMSORB® PLUS is the only absorbent to ensure that gas delivery is free from potentially toxic chemicals.