It is unusual so you'd need to be very sure your PH is right, but as I mentioned it can 'apparently' go cloudy for other reasons so if the PH is okay then the cloudiness must be misleading - either way it seems fairly certain that its the PH that stops starsan being effective so if that is okay then presumably so is the starsan. I read about it somewhere and can't find it again but did come across this (pics seem to have gone though).
EDIT: That said, it seems doubly strange that its gone cloudy in two different types of water that should be neutral, particularly as one is RO which is normally known to be okay. Seems 'unlucky', I wonder if theres something odd going on with the starsan itself or something.. or maybe the process - you're not accidentally mixing in bleach residue for instance. Is it the stasan solution PH you're measuring or just the water before hand?
Cheers
Kev
Star San - How cloudy is too cloudy?
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jimp2003
Re: Star San - How cloudy is too cloudy?
I would agree with Kev that cloudiness of water is not, on its own, a reliable indicator of the effectiveness of the Star San.
If you look at this guy's videos http://www.youtube.com/user/jaygnar#p/u/0/jqz3X-WlKm8 he runs ph tests over a number of days on solution made up with distilled water versus a couple of samples of solution made from his own tapwater.
The tapwater samples are cloudy but still return acid readings that are as near as damn it the same as the distilled water sample. I think he should have shown a reading of the ph levels of his tap water without the star san at the outset to indicate its effectiveness but it still shows that he would have thrown out good sanitising solution if he had just gone by the cloudiness.
Jim
If you look at this guy's videos http://www.youtube.com/user/jaygnar#p/u/0/jqz3X-WlKm8 he runs ph tests over a number of days on solution made up with distilled water versus a couple of samples of solution made from his own tapwater.
The tapwater samples are cloudy but still return acid readings that are as near as damn it the same as the distilled water sample. I think he should have shown a reading of the ph levels of his tap water without the star san at the outset to indicate its effectiveness but it still shows that he would have thrown out good sanitising solution if he had just gone by the cloudiness.
Jim