1. Identify the hidden catalyst; 2. Quantify the amount of the hidden catalyst; 3. Determine the kinetic viability of the hidden catalyst at the concentrations identified; and 4. Compare the kinetic data of the reaction conditions to that at the concentration of the hidden catalyst. These put a significant hurdle to widespread use and so hinder the wider advancement of catalysis. Something as simple and easily applied as Akin to litmus paper, such as, a colourimetric test to identify hidden catalysis would be ideal. Such a test would require an indicator suitable to identify the catalytically active species without interfering, or reacting with, with the reaction (substrate, catalyst or reagents) and have a visible colour change in a short time. It should also operate at low loadings, be bench-stable, readily available, and practically accessible to the expert and non-expert practitioner alike.