William Laven (wmlaven@platinotype.com)
Fri, 19 Feb 1999 23:04:06 -0800 (PST)
>William Laven wrote:
>
>>>I wonder which ideas about PMK and Jobo seem untenable or ungrounded to you?
>>
>>For example, using 500ml of developer/8x10 sheet which means 2500ml in the
>>Jobo Expert 3305 which has a maximum volume of 1500. I think a more
>>"liberal" figure for developer quantity is in order.
>
>I agree. In fact, for an 8X10 sheet half that amount would seem enough. I
>use 100ml of PMK for 5X7 sheet film with tube processing and all my tests
>confirm that this amount is enough to assure full development.
>
>Sandy King
Your suggested amt. of developer jives with my rule-of-thumb, ie 1oz
developer/10 sq in film so 3.5oz for a 5x7 (roughly your 100ml) and 8 oz.
for an 8x10. People often speak of using the max amt of developer in the
Expert Drums which easily provides enough developer for development and
then some to reduce oxidation.
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Workshops and tutorials in Platinum/Palladium printing and Zone System.
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