Response to 220 Land Camera BW neg processing

:http://www.cs.berkeley.edu/~qtluong/photography/lf/polaroid55.html try that link it should give you all the info you need. from my own personal experience the 4x5 sheet film seems to clear alot faster in sodium sulfite but you could use water.with the pack film I just use water because it clears so fast anyway-J

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