Doublereed Archive - Posting 000005.txt from 2006/11

From: Ann Rosandich <annrosandich@-----.net>
Subj: Re: [DR-L] reed cleaning/hydration/attn Herb Fawcett
Date: Fri, 03 Nov 2006 09:05:05 -0500

what about the after-taste of the glycerol? A few years ago I diluted
glycerol with distilled water and immersed a reed in the solution.
Thereafter the reed had a very unpleasant taste/after-taste. I did not
notice any positive or negative changes in the reed's hydration
properties. I discarded the glycerol. I obtained the glycerol from
one of my student's, a PhD at one of Harvard's virology labs, and was
assured of its highest grade and purity. After observing my reaction
to the taste of the glycerol she didn't even want to try the stuff.

ann

On Friday, November 3, 2006, at 07:13 AM, Mike Benthin wrote:

> Herb, ever add glycerol to the mouth rinse you advocated for reed
> cleaning/sterilization? Wouldn't peroxide digest some of the reed
> composition?
> link: (may need to paste if browser cuts it)
> http://patft.uspto.gov/netacgi/nph-
> Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum
> .htm&r=1&f=G&l=50&s1=5,379,673.PN.&OS=PN/5,379,673&RS=PN/5,379,673
>
> Inventors: Vogt; Robert F. (Atlanta, GA)
> Assignee: Carvo Musical Products, Inc. (Atlanta, GA)
>
> Appl. No.: 08/179,572
> Filed: January 7, 1994
>
> The use of 3% hydrogen peroxide, by itself, provides the most
> effective cleansing of the reeds but when used alone causes the reeds
> to dry out and warp upon repeated use. The addition of at least 5%
> glycerol to a composition containing hydrogen peroxide as in the
> invention prevents the adverse action of hydrogen peroxide. Glycerol
> concentrations, however, above 10% cause reeds to "deaden" from
> over-hydration after repeated treatment. Glycerol concentrations in
> the range of 7-8% provide the most effective treatment without the
> disadvantages of overhydration.
>
> Reeds which have been treated with the composition containing the
> preferred concentrations of glycerol and hydrogen peroxide on a weekly
> basis retain a clean appearance and do not show growth of molds or
> bacteria, even up to at least two years after last use. With proper
> storage, such as in a reed holder, reeds treated with the composition
> of the invention do not warp as is often the case with untreated
> reeds. In addition, treated reeds retain enough moisture for at least
> one week after treatment to prevent the warping that generally
> accompanies dryness in untreated reeds. Such treated reeds are easily
> playable by simply rehydrating the reed with saliva. Regular treatment
> with the preferred composition allows reeds to be used between twice
> and three times as often as untreated reeds. Thus, if an untreated
> reed were acceptable for five performance or practice sessions, a reed
> treated according to the invention would be acceptable for use for
> 10-15performance or practice sessions.
> --
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