[slomz]

Hi I am trying to get a more concentrated solution of H202.  I have been to many stores but can only find 3%.  Is there a procedure I can do that I can remove water from the H202 to raise the concentration above 3% ?

[nj_bartel]

for what purpose

[slomz]

I am doing an experiment with a potato, and I need 6% h202.  I am infecting the potato and keeping it contained for a few days.  Some reasearchers say that 3% can kill the infection, but I have tried and it hasn't.  I am trying to see what concentration of h202 it will take to kill the infection.

[nj_bartel]

 http://wikipedia.biz/wikipedia/hy/Hydrogen_peroxide.html

Sparging would probably work best and be the safest method because the other methods are either dangerous or, in the case of freezing, will yield you a pretty highly concentrated h2o2 solution, which is inherently dangerous.  Is there a reason you can't just buy some more highly concentrated h2o2 of known concentration and add water?

[slomz]

I have tried.  I have gone to pharmacies and chemical supply stores in my area and none have any available.  I would like to know a bit more about this sparging method.  I looked it up and it seems that it would not yield great results unless I had access to better equipment.  What about freezing?

[nj_bartel]

If you're just trying to go from 3% to 6%, why is not yielding great results a problem?

[slomz]

Well I am hoping that 6% will work.  If it does not then I will have to move up again.  What I am wanting to know is more about a reliable, safe method.

[mir]

Many hair products got hydrogen peroxide solutions I think. But Im not sure how strong.