or Sigma-Aldrich : These are primary sources for research-grade chemicals, though they often require a business or lab affiliation to purchase.
Hydrogen peroxide 30 (w/w) H2O, contains stabilizer 7722-84-1 where can you buy 30 hydrogen peroxide
: Offers various brands like Lab Alley and PureChemPros . You can find both liquid solutions and "30 Volume" cream developers (though these often contain additives). or Sigma-Aldrich : These are primary sources for
: Sell "30 Volume" developer, which is approximately 9% concentration—significantly weaker than a true 30% liquid solution. where can you buy 30 hydrogen peroxide
