Purity Analysis of Additives

[YankeeTankee]

Anyone done any purity analysis on popular brands of 2 part or kalk? I've heard BRS, Tropic Marin, and ESV use pharma grade products and I think by that they mean USP.

Are there other sources, maybe marketed for other things, that people commonly overlook? I know USP is good quality but is it worthwhile to maybe seek out ACS or reagent grade chemicals? I have read these are more pure than USP.

So basically I'm wondering if one of the three brand I mentioned above sticks out as having the highest purity and if it's worth seeking out ACS grade (or whatever other grade you inform me is better) chemicals over those/where to find that.

 

[Randy Holmes-Farley Verified Community Expert]

I've never seen any analysis of two part supplements or kalkwasser, except those that I have done or which chemical company suppliers of calcium hydroxide provide. USP and FCC (and other) grades do provide significant purity assurance.

With a two part, the issue is more complicated than simple purity and goes to how the company actually intendeds it to be designed.