What is the shelf life of peracetic acid? Could I keep a keg of it around the way I do StarSan? How safe is it? Gloves / eye protection required?
Almost all of the other sanitizers have a lifespan of about 24 hours after being mixed. I am a dunker so I do not mind mixing up solution. I use 91% isopropyl in a spray bottle for spray applications. I used to use 190 proof Everclear for spray applications, but my state outlawed its sale.
This discussion has sparked my interest to try peracetic acid (PAA) after further researching.
Max limit suggested is 500ppm without rinse.
In limited data it seems breweries and wineries use 125 - 250 ppm.
Five Star and Birko sell this in 5 gallon size ($$) which is much to large a purchase for my experimentation.
I either need a source for smaller quantity or produce PAA myself.
I have found this recipe:
H2O2 5% 125ml + white vinegar 3% 75ml = PAA 200ml
Can I convert this into an equation to calculate PPM?
Does anyone have a better method of production?
As already noted this must be used in well ventilated area.
[quote=“brewinhard, post:59, topic:21378, username:brewinhard”]
Crap! Figures [emoji12]
I remember that, Jim 
Yes, I’m quite sensitive to both of them too.