Re: [APML] TechPan Hypering Experiments

[Aplanatic@aol.com]

Hi Jim, Jack:

> I have been using hypered 4x5 TP for about 6 months now and would like to
>  make one suggestion for you to try.  I started developing 4x5 with a Yankee
>  Agitank, a square tank that requires 55 ounces of chemistry for each step
>  and manual agitation.  I really didn't like the amount of chemistry and the
>  uneven agitation process.  I have now tested a Jobo round tank #2521 with
>  the Jobo reel and 4x5 loader which makes loading really easy.  You don't
>  need a Jobo processor just their #1509 roller base for agitation.  All of
>  this stuff is regularly available on Ebay.
>  
>  The real advantage is much more even / random agitation and only 560 ml (18
>  ozs. ?) of chemistry for 4 sheets.  I have seen a great improvement in the
>  quality of my development since making the change.

Jim,

Thanks for pointing this out.  Aside from the consistency issue, I'm getting 
a bit tired of manual agitation in total darkness.  Eight minutes of 
developing this way seems like an hour, especially after doing a half-dozen 
test strips sequentially.

Do you know if the Jobo tank will hold my 3.4" diameter round film chips in 
an effective manner?

Jack,

I have used Cibachrome processing tubes in the distant past and still have a 
drum roller and several tubes.  Thanks for reminding me about it, I had 
totally forgotten about this gear tucked away on a top shelf.  I wonder if 
this method would work for round film chips?  It's easy enough to check. 

Dave Rowe

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