And that's essentially a result of the second step of the reaction being relatively slow. So graphing the data that we obtained from experimental results this shows us that the fast initial burst of the color product followed by us slowing down and that's basically a result of us reaching the steady state condition and that second step being so much slower than that first step. So to see exactly what happens let's take a look at the following diagram so in this particular diagram we have the active side of the Chimetrypsin and this is Serene 195. So let's suppose we add our chromogenic substrate. Chromogenic simply means when that substance reacts to produce a product that product will change color. And we can monitor the color change.