In this protocol, iodide ion is generated by the following slow reaction between the iodate and bisulfite: IO3− + 3 HSO3− → I− + 3 HSO4− This first step is the rate determining step.
Dalam protokol ini, ion iodida dihasilkan melalui reaksi lambat antara iodat dan bisulfit: IO3− + 3 HSO3− → I− + 3 HSO4− Inilah langkah yang menentukan tingkat (laju).