Date: Fri Nov 17 15:03:19 2006

Author: dkardelis

Subject: Re: cleaning out water resonance columns

Post:
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If the 'gunk' is just mineral deposits, just fill the tube with vinegar. =
The
vinegar will dissolve the minerals and you can just rinse it out after.

We have really hard water here in Utah and I clean everything from the =
sink
taps to the tea kettle with vinegar. White or cider vinegar, it doesn't =
make
a difference.

erica

=20

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of Carter, Tom
Sent: Friday, November 17, 2006 10:35 AM
To: tap-l@lists.ncsu.edu
Subject: [tap-l] cleaning out water resonance columns

=20

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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If the ‘gunk’ is just =
mineral
deposits, just fill the tube with vinegar. The vinegar will dissolve the
minerals and you can just rinse it out after.

We have really hard water here in =
Utah and I clean =
everything
from the sink taps to the tea kettle with vinegar. White or cider =
vinegar, it
doesn’t make a difference.

erica



-----Original =
Message-----
From: =
tap-l-owner@lists.ncsu.edu
[mailto:tap-l-owner@lists.ncsu.edu] On Behalf
Of Carter, Tom
Sent: Friday, November =
17, 2006
10:35 AM
To: =
tap-l@lists.ncsu.edu
Subject: [tap-l] cleaning =
out
water resonance columns







Folks,











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.











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?











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.











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











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