Archived posting to the Leica Users Group, 2001/01/30

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Subject: Re: [Leica] Re: @#&$$& Watermarks!!
From: Martin Howard <howard.390@osu.edu>
Date: Tue, 30 Jan 2001 18:32:33 -0500
 
Ray Moth jotted down the following:

> I believe Martin's @#&$$& water marks may be caused by inadequate final
> rinsing. To be sufficiently thorough, you must rinse at least three
> times. Failure to do this will merely dilute the hard water minerals or
> soap, it won't remove them completely. You will then get drying marks.

My rinsing procedure:

    * Fill tank with fresh water.  Invert five times.  Dump.
    * Fill tank with fresh water.  Invert ten times.  Dump.
    * Fill tank with fresh water.  Invert twenty times.  Dump.
    * Fill tank with fresh water.  Invert twenty times.  Dump.
    * Fill tank with distilled water.  Squirt in Photo-Flo.
      Soak reels for 10-30s, pull them out, hang to dry.

That should be quite adequate rinsing.

M.

- -- 
Martin Howard                     |
Visiting Scholar, CSEL, OSU       | Quidquid latine dictum, altum videtur.
email: howard.390@osu.edu         |
www: http://mvhoward.i.am/        +---------------------------------------