Peter:

Thank you for your insights.

Until now I had been using bleach diluted in tap water, but it's good =

to know there are other options, and to know the importance of =

thoroughly drying all components.   On occasions I've rinsed the =

circuit in swimming pool water after a sea dive, but I was concerned =

wether this would damage the hoses or bags. Do you have any experience =

using pool water for this purpose?

Conrad Daubanton

>----------
>De: Peter Heseltine
>Para: Conrad Daubanton
>Asunto: Disinfecting the loop - (again)
>Fecha: S=E1bado 21 de Marzo de 1998 22:33
>
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>Date: Sat, 21 Mar 1998 13:32:46 -0800
>To: Conrad Daubanton <100774.1625@co*.co*>
>From: Peter Heseltine <heseltine@ea*.ne*>
>Subject: Disinfecting the loop - (again)
>Mime-Version: 1.0
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>
>The most important aspect of disinfection is *drying* the loop. Obviosly=

>all goop, gorilla snot and phlegm balls need to be removed with rinsing =
and
>brushing if necessary. Betadyne works by releasing elemental iodine whic=
h
>kills bacteria, protozoa, viruses and most fungi. Paradoxically for us,
>many marine organisms are relatively resistant to iodine, but not at the=

>concentrations used. Do not dilute the betadyne more than as per the
>instructions - it will not release the iodine if in low concentration.
>Betadyne is adsorbed to rubber and does degrade it over time - but proba=
bly
>not appreciably compared with our normal use. It does make a difference =
for
>plastics because eventually they discolor permanently with betadyne.
>
>Other choices are bleach 1:10 solution (quite caustic and smelly, but ch=
eap
>and very effective) or quats (ionic and anionic detergents). Quats are
>quite inexpensive, are relatively non-toxic at use dilutions (1:1000) an=
d
>so do not need to be rinsed with fresh water like betadyne. (Sea water i=
s
>full of micro-organisms, as you might expect)  However quats are not ver=
y
>effective against many bacteria, most fungi and very few protozoa e.g.,
>amoeba .
>
>But the key step to using any of these or other agents is to thoroughly
>*dry* the loop: Squeeze all of the water out and open/invert/aerate - at=

>least once a day - 'til it's bone dry. That will kill/inhibit almost all=

>important organisms. Disinfection in this case means getting the loop at=

>least as clean as your toothbrush between uses ;-)
>
>pH
>
>(see the archives for other posts and posturing on this topic)
>
>At 05:30 PM 3/21/98 -0500, Bill Elliott wrote:
>>	If you want to do it cheaply and simply, get some betadyne ...
>> Betadyne will kill most nasty little bugs in 5 or 10 minutes.

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