Medisorb multi absorber original, disposable, white to violet, GE Aespire, GE Avance, GE Aisys. CO2 absorption.

As an aid in determining the progressive exhaustion of Medisorb medical soda lime, a sensitive acid-based ethyl violet indicator is added to the formulation. As the pH of the absorbent decreases below 10.3, medical grade Medisorb absorbent will change color from white to violet as the absorption reaction develops and moves in the direction of the gas flow.

During intermittent usage of equipment, Medisorb will change color from violet to white due to an increase in pH at the surface of the Medisorb particle. This color reversion is strictly a function of pH change and does not indicate regeneration of any absorptive capacity. Because of color reversion, it is important for the healthcare professional to determine the degree of absorbent capacity that has been exhausted. However, color indication is not a definitive guide and should always be used in conjunction with CO2 monitors and time/volume calculations. If there is any uncertainty about the remaining absorptive capacity of Medisorb, replace the existing material with fresh Medisorb absorbent disposables.