"What if"

[Ron99]

No chemicals are 100% pure. None. Period. You can probably get to 99.9% pure at a significant cost. The most pure ones are very expensive so it all depends on the grade of chemical you use. Are they using analytical grade? Pharmaceutical grade? Food grade? Reagent grade? Does FM list the grades of chemicals that are used in their products so it can be compared to BRS or LSM? I would almost certainly guarantee that they are all the same grade. The ACS or USP grade stuff gets really pricey.