swmcl
8-Mar-2014, 17:53
Without offense to too many ... goodness me what a mess.
I'm reading a pdf that seems to be written by:
Acufine Chemicals
701 Corporate Woods Parkway
Vernon Hills, IL 60061
847-821-5429
I'll see if I can attach it to this post.
In the Acufine replenisher section it states in bold letters the following:
Replenishment: Acufine replenisher should be
added and stirred into the developer after each
batch of film has been processed. Average
replenishment is at the rate of 1/2 fluid ounce per
80 square inches of film ( one roll of 36 exposure
35mm, or 1 roll of 120 or four 4x5 sheet film ).
Replenishment can be continued until a volume
equal to the volume of the original developer has
been added. Without replenishment, four rolls
of film may be developed at normal times.
Increase the developing times by 2% for each
additional roll. Develop no more than 16 rolls
per quart in this manner.
So apart from finding out what fluid ounces were ...
I'm interested in the last section. Four rolls of what can be developed at normal times ? (35 or 120?)
Exactly how much fluid is this developer using per sq inch of film ? If I have a smaller Jobo and put just enough fluid in there to cover the film does the above instruction mean I can do four rolls in such a manner ? If however, I develop a roll in plenty of developer and then tip the developer back into the main gallon container then I assume the 2% bit is discounted. If I were to carry on like this then I'd put the replenisher in after what, 16 'rolls' ??
What a mess.
I'm also assuming that a number of US companies are still not required to use SI units ? I thought ounces were a measure of weight not volume ! And then there's the UK gallon vs the US gallon...
Thank goodness for the French and their SI units eh !
Sorry for the vent but ...
I'm reading a pdf that seems to be written by:
Acufine Chemicals
701 Corporate Woods Parkway
Vernon Hills, IL 60061
847-821-5429
I'll see if I can attach it to this post.
In the Acufine replenisher section it states in bold letters the following:
Replenishment: Acufine replenisher should be
added and stirred into the developer after each
batch of film has been processed. Average
replenishment is at the rate of 1/2 fluid ounce per
80 square inches of film ( one roll of 36 exposure
35mm, or 1 roll of 120 or four 4x5 sheet film ).
Replenishment can be continued until a volume
equal to the volume of the original developer has
been added. Without replenishment, four rolls
of film may be developed at normal times.
Increase the developing times by 2% for each
additional roll. Develop no more than 16 rolls
per quart in this manner.
So apart from finding out what fluid ounces were ...
I'm interested in the last section. Four rolls of what can be developed at normal times ? (35 or 120?)
Exactly how much fluid is this developer using per sq inch of film ? If I have a smaller Jobo and put just enough fluid in there to cover the film does the above instruction mean I can do four rolls in such a manner ? If however, I develop a roll in plenty of developer and then tip the developer back into the main gallon container then I assume the 2% bit is discounted. If I were to carry on like this then I'd put the replenisher in after what, 16 'rolls' ??
What a mess.
I'm also assuming that a number of US companies are still not required to use SI units ? I thought ounces were a measure of weight not volume ! And then there's the UK gallon vs the US gallon...
Thank goodness for the French and their SI units eh !
Sorry for the vent but ...