Date: Fri Nov 17 14:20:42 2006

Author: Papp, James J

Subject: Re: cleaning out water resonance columns

Post:
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I am not sure blowing them up is the right answer.
=20
I recommend a plumber's snake or similar hardware, after each usage.
Also, CLR might help.
=20
Jim Papp

________________________________

From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of Carter, Tom
Sent: Friday, November 17, 2006 11:35 AM
To: tap-l@lists.ncsu.edu
Subject: [tap-l] cleaning out water resonance columns


Folks,
=20
We got a set of the 1 meter long glass tubes with the drain fitting
at the bottom that we use to show the resonance of a particular sound
frequency. (You drain or fill the water in the tube, changing the
length of the air column.) Our problem is that after a couple of uses,
we always seem to wind up with gunk in the settling into the bottom of
the tube, that almost completely blocks the drain. That really slows
the rate at which you can change the water column and makes for a
frustrating lab. Cleaning them out with a brush has been painful in
the past and they gunk up rather quickly, even when we use DI water.
=20
Any of you old pros got a tip for me? How to clean them or how to
stop them from gunking up? Anyone else had any experience with these?
=20
I'm thinking of walking them over the auto shop (the advantage of
being a community college) and seeing if I can blow up the tubing and
the tube all at once.
=20
=20
tom =20

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I am not sure blowing them up is the right=20
answer.

I recommend a plumber's snake or similar =
hardware, after=20
each usage. Also, CLR might help.

Jim Papp


From: tap-l-owner@lists.ncsu.edu=20
[mailto:tap-l-owner@lists.ncsu.edu] On Behalf Of Carter,=20
TomSent: Friday, November 17, 2006 11:35 AMTo:=20
tap-l@lists.ncsu.eduSubject: [tap-l] cleaning out water =
resonance=20
columns


Folks,

We got a set of the 1 meter long =
glass=20
tubes with the drain fitting at the bottom that we use to show the =
resonance of=20
a particular sound frequency. (You drain or fill the =
water in=20
the tube, changing the length of the air column.) =
Our=20
problem is that after a couple of uses, we always seem to wind up =
with gunk=20
in the settling into the bottom of the tube, that almost =
completely=20
blocks the drain. That really slows the rate at which =
you=20
can change the water column and makes for a frustrating=20
lab. Cleaning them out with a brush has been =
painful in=20
the past and they gunk up rather quickly, even when we use=20
DI water.

Any of you old pros got a =
tip for=20
me? How to clean them or how to stop them from gunking =
up? =20
Anyone else had any experience with these?

I'm thinking of walking them over the =
auto shop=20
(the advantage of being a community college) and seeing if I =
can blow=20
up the tubing and the tube all at once.

&nb=
sp; &nbs=
p; =
; =
&=
nbsp; &n=
bsp; &nb=
sp;=20
tom

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