[Harp-L] Can you use an ultrasonic cleaner on a sealed pearwood (Hohner) comb?

[Joseph Leone]

Higher concentrations of hydrogen peroxide are available at beauty supply sources. As high as 9. I recommend 6%.
 
‘broken shoe joe’


> On Apr 30, 2018, at 4:12 PM, OWEN EVANS <owenpevans at xxxxx> wrote:
> 
> You are partially correct Mr. Feldman. Please have a read about this as there are more bugs in spit than just flu virus.
> 
> https://www.nhs.uk/chq/Pages/how-long-do-bacteria-and-viruses-live-outside-the-body.aspx?CategoryID=200&SubCategoryID=2001 <https://www.nhs.uk/chq/Pages/how-long-do-bacteria-and-viruses-live-outside-the-body.aspx?CategoryID=200&SubCategoryID=2001>
> 
> 
> I can tell Mr. Marsolais that I have placed lots of sealed combs in an ultrasonic cleaner using 3% w/v Hydrogen Peroxide for 15-20 minutes. It works well. I currently use Crossovers & they are sealed bamboo & clean up fine. I’d be concerned about old pearwood combs as they were not sealed & may absorb liquid thus warping!
> If you can get higher concentration H2O2 it will work faster. Attached is a paper on use of H2O2 for this purpose.
> 
> Cheers,
> Owen
>