I've noticed that there is sometimes an insoluble, yellowish goo that settles out when I am evaporating some of my NPS before going on to freeze precipitation. I've tried to dissolve it with fresh, hot naptha to no avail. This is using ACRB and shortly after doing a mini A/B.
Is it safe to assume that I should go ahead and discard the insoluble goo?
Is it safe to assume that I should go ahead and discard the insoluble goo?