Lance, I use 30% H2O2 to bleach soundboards , and the chemist who sold it to me, told me, that as long as I don't delute it down to a lower percentage and keep the (black PE) bottle closed it stays good. She doesn't stock a lower % H2O2. When she needs some low% to sell to a customer she delutes it at THAT moment, and advises to use it asap. Michiel van Loon Meppel Holland -----Oorspronkelijk bericht----- Van: Lance Lafargue <lafargue@iamerica.net> Aan: pianotech@ptg.org <pianotech@ptg.org> Datum: dinsdag 16 maart 1999 19:13 Onderwerp: Re: peroxide >So is my 2 year old H202 on the shelf still good? It seems to still work >as when it was new. >LANCE LAFARGUE, RPT >LAFARGUE PIANO SERVICES >New Orleans Chapter >Mandeville, LA. >_______________________________ >II III II III II III II III II III II III II III II III II III II >------------------------------------------------------- >lafargue@iamerica.net > >---------- >> From: Newton Hunt <nhunt@jagat.com> >> To: pianotech@ptg.org >> Subject: Re: peroxide >> Date: Monday, March 15, 1999 8:26 AM >> >> Hydrogen peroxide, two hydrogen and two oxygen, is unstable and breaks >> down to free oxygen and water. It is the free oxygen that does the >> work. For a complete break down a catalyst is required, in this case >> it is platinum. >> >> This reaction action is familiar to contact lens wearers. >> >> Newton >> >> >
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