Archived posting to the Leica Users Group, 2006/04/19

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Subject: [Leica] Re: Film drying
From: lrzeitlin at optonline.net (lrzeitlin@optonline.net)
Date: Wed Apr 19 16:03:01 2006
References: <200604162350.k3GNoLwq075592@server1.waverley.reid.org>

I've been following Ted's strategy for drying film for about 40 years. At 
that time I was fortunate enough to buy 
one of the last of the Stratham Instruments, Inc. film dryers which dried 
film while they were still on Nikor 
developing reels. The Stratham dryer consists of an 18" tall plastic tube 
just wide enough to take a 36 exposure 
wire reel and tall enough to stack four of them. This tube is contained is a 
slightly larger tube. At the base of 
the tube is a dessicant canister containing about half a pound of silica 
gel. A fan draws air through the four 
stacked reels, through the dessicant chamber and then up the space between 
the tubes. The dried air passes 
through a filter in the cap and is drawn down past the film again.

The dessicant is good for about 20 rolls of 36 exposure film. Film is 
usually dry after 30 minutes. When the 
time rises to 40 minutes, the dessicant container is refreshed by placing it 
in a baking oven at 450 degrees for 
two hours. In the 40 years of using this device I have never had a water 
spot or a dust speck on any roll of 
film.

Statham Instruments, Inc. was a major supplier of laboratory equipment 
during the Dark Ages. I don't know if 
they are still in business or have been absorbed by some conglomerate. If 
you find one of these devices at a 
photo flea market, snap it up. It does the job.

Larry Z

Replies: Reply from firkin at ncable.net.au (Alastair Firkin) ([Leica] film curling)