If the HQ - Peroxide - Sulfite solution is clear or tan, you have a good reaction. If it turns dark brown or green, you have a bad reaction.

Now, that is based on HQ to HQMS and Sulfite to Sulfate. However, the molar ration may vary quite a bit between these two. This is the "unknown" factor that Jerry spoke of in his posts. The only way to fix it is to purify the HQMS, removing the Sulfite and Sulfate. Then you know what you have.

But, this purification is difficult and time consuming.