Originally posted by Brwd.By.Boucher
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Common practice it to use about a 2% solution (by volume) of caustic additive to your water. If adding H202 to boost the performance, you will create sodium peroxide, which is very aggressive. You need to use extreme caution when doing this. You can start with something like 30ml of a 35% H2O2 per 4 liters of pre-mixed (2%) caustic solution, but you want to add it just before starting the cycle. The pH needs to be above 12.5. The reactions will be rapid and short lived, so you only really get about 30 mins of action. PAA solutions usually needs to be 165ppm or more for a contact time of at least one second. It depends on the manufacturers trade product and the surface you are working with. Test strips are the easiest way to check. General practice is a 15min cycle of PAA solution for sanitation.
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