Originally Posted by insurgus
Why dont you just use star san?
Originally Posted by samc
StarSan is a sanitizer not a cleaner.
I would think you could use ONE STEP CLEANSER, which is no rinse. I've never used it so I can't say yeah or nay on it.
Yeah I use starsan religiously but I'm looking to clean in place on the new rig. As samc said, starsan is not a cleaning agent.
5 star chemicals has supposedly described PBW as roughly a 70/30 mix of sodium percarbonate and sodium metasilicate (plus surfactant). The percarbonate provides most of the cleaning action (it and soda ash/washing soda/sodium carbonate are the primary agents in oxyclean). The metasilicate apparently provides some water softening capacity so the solution is effective in hard water (which I have).
Oxyclean free is cheap, yes, but has fillers and probably surfactants and foaming agents which I would rather not have. The percarbonate and metasilicate are cheap also and available locally and I know exactly what's going into the mix. Plus oxyclean often leaves a residue which is supposedly the result of hardwater contact. Using a mix with the metasilicate may resolve or reduce this problem.
I'm looking at MSDS for these and they're not looking too toxic. The dangerousness apparently stems from their strong alkalinity which would be a non-issue in diluted and residual form. I'm wondering if it's really necessary to rinse them.
I have used one-step and it works ok. Definitely not as good as PBW. I would consider making that as well but I haven't got a clue what's in the one-step. Maybe just straight percarbonate?