So 1oz of Starsan in 5gallons of water is supposed to provide 300ppm of dodecylbenzenesulfonic acid and 780ppm of phosphoric acid. To sanitize at this solution, it is recommended that the solution makes contact with the surface for 30seconds.
Does any chemist on here know if I can use lower concentrations for longer time? Like 150ppm dodecylbenzenesulfonic acid & 390ppm phosphoric acid for, say, 5 minutes?
It would be a great way to save sanitizer but I'm sure there's some sort of threshold below which it would no longer be acidic enough to kill bacteria.
Does any chemist on here know if I can use lower concentrations for longer time? Like 150ppm dodecylbenzenesulfonic acid & 390ppm phosphoric acid for, say, 5 minutes?
It would be a great way to save sanitizer but I'm sure there's some sort of threshold below which it would no longer be acidic enough to kill bacteria.