From: Sandy King (sanking@clemson.edu)
Date: 11/26/01-04:31:55 PM Z
Try about 0.2g - 0.4g per liter of working solution. This is about a pinch.
Sandy King
>Sandy: Thanks. How much sodium sulfite? Like in a liter of working
>solution? -jb
>
>Sandy King <sanking@CLEMSON.EDU> said:
>
>> Jeff,
>>
>>
>> Garimo's procedure with rotary processing is well-documented and has
>> been in use since the early days of PMK. It is not, however, the only
>> method of reducing the general fog caused by oxidation with long
>> development times in PMK. Another method simply calls for adding a
>> small amount of sodium sulfite to the working solution. Another
>> solution is to add a small amount of ascorbic acid.
>>
>>
>>
>> Sandy King
>>
>>
>>
>>
>>
>>
>>
>> >I saw no one comment on Garimo's procedure of changing to a fresh batch of
>> >pyro developer in the middle of the development period in order to defeat
>> >oxidation. I've wondered about this because, although I use trays and not
>> >rotary, my development time in PMK is pretty long -- 12 minutes. -jeff
>> >buckels
>>
>>
>> --
>>
>
>
>
>--
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