[pure-silver] Re: Hypo Test Sensitivity

My guess is that a test of residual hypo in wash water would be very dependent on the physics of the washer (volume of water/area of paper, time of immersion in last wash, etc). If you used a "cascade" or continual flow washer would you transfer the print to a measured quantity of water at a certain temperature for a set time with defined agitation to get a sample?

Just a guess from the comfort of my armchair.

John Stockdale
==========================>
At 09:43 AM  28/06/2006, you wrote:

I'm trying to compare the test sensitivities of HT1 vs HT2. HT1 measures the
residual hypo content of the last wash water using potassium permanganate,
and HT2 measure the residual hypo content of the emulsion using silver
nitrate.

Has anyone used both and can share their experience?





Regards



Ralph W. Lambrecht

http://www.darkroomagic.com






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