Archived posting to the Leica Users Group, 1999/05/21

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Subject: Re: [Leica] Re: Jobo and wash aids
From: Thomas Kachadurian <kach@freeway.net>
Date: Fri, 21 May 1999 22:29:11 -0500

Glen:

I may be mistaken but as I understand it it's wash agents (like 
permawash) and stabilizers (like Jobo's own) that are a problem, not 
wetting agents.

Tom

At 8:21 AM -0500 5/21/99, Glen M. Robinson wrote:
>Dan Cardish <dcardish@microtec.net> on 05/21/99 06:37:39 AM
>
>Please respond to leica-users@mejac.palo-alto.ca.us
>
>At 08:54 PM 20-05-99 -0700, you wrote:
>>The current issue of the JOBO newsletter arrived. They said that "any"
>>wetting agent will build up over time, on your
>>reels, making them difficult to load. Basically, don't put your reels in
>>any wetting agent.
>
>
>I have read this advice many times before and it does not make 
>sense.  Photo Flo
>and the other like materials are nothing other than very dilute and highly
>soluble surfactants (soap) .  Most photographers only mix three or 
>four drops of
>the stock wetting agent in the water in a developing tank, normally sixteen
>ounces.  Adequate rinsing of reels placed in the diluted wetting agent should
>remove any lingering traces of the agent.  Placing reels containing freshly
>processed film in a Photo Flo solution has been my practice for the past 25
>years and I have never experienced any problems with reels.  If wetting agents
>build up on rinsed reels then we had better stop washing dishes.
>
>Glen Robinson

Thomas Kachadurian
WEB PAGE: http://members.aol.com/kachaduria