So where do you get 30% H2O2?
You used to be able to get up to I think 50% or maybe 60% at beauty supply places, a lot cheaper than at chemical suppliers. I don’t think you can anymore, since the 9-11 panic.
I still have a couple of bottles of 40% from Sally Beauty Supply, don’t know if it is any good anymore, it must be 20 years old.
There was a youtube video on how to concentrate 3% up to whatever percentage you wanted without any fancy equipment
I get 35% food grade H2O2 from
https://www.blubonic.com/product-page/35-food-grade-hydrogen-peroxide
Amazon pretends to have it but only sells 12%
Use for canning and other sterilization needs.
Other cleaning uses are all over the web.
I dilute to about 1 % for my CPAP machine and humidifier. Keeps both clean and sanitized.
Oxygen is a byproduct .
Also use 4-5 drops in each ear if I feel a cold coming on. My Dr taught me that one .. works very well
Also use about.a 12% dilution for cleaning counters, sink joints and other heavy uses.
Great stuff !
Be careful though as 35% straight from bottle can burn you ..
Read the cautions
I used to be able to buy 35% which, due to the shipping weight, was the most economical means of buying it. But since Federal law apparently now requires merchants of 35% concentration hydrogen peroxide to be licensed, and hydrogen peroxide over 20% solution is part of the Items never allowed by the USPS, then it is hard to find. http://www.dfwx.com/h2o2.htm does offer it, though I am, suspicious of the legality of selling it for personal use, even though I do not like the restriction if it exists.