Agitation Scheme Notation

Discussion in 'B&W: Film, Paper, Chemistry' started by thelawoffives, Aug 17, 2011.

  1. thelawoffives

    thelawoffives Member

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    Hey all,

    Is there a "standard" or, at least, commonly used notation for agitation schemes? I am looking to note on a printfile, and so I am looking for a clear way to write this info down as succinctly as possible. I tried a few, but none are very clear, so I am hoping the collective might have some wisdom on this. I have seen things like 5/10 to denote 5 inversions in 10 seconds, but I am looking for a way to write "Initial 60 seconds, then 5 inversions in 10 seconds every minute" or "Initial 60 seconds, then 3 inversions in 10 seconds every 5-10 minutes" etc etc.

    Thanks for your help
     
  2. Dave Martiny

    Dave Martiny Member

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    Reading your thread has inspired me to make up my own notation protocol.

    Try something like this:

    Initial agitation in seconds : # of inversions /(per) # of seconds /(every) number of minutes.

    Then, the two examples at the end of your post would become:

    60: 5/10/1, and
    60: 3/10/5-10

    Best regards,

    Dave
     
  3. mr.datsun

    mr.datsun Member

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    I have now standardised on 1 inversions per 2.5 secs. So I write 60|10|60 or 60|5|30 for brevity where all nos. are seconds. If I feel I need to vary the speed, and hence quantity of inversions per period, I can always add (f)ast or (g)entle at the end. And if I ever felt the need to do stand development I would add an 'm' for minutes to the last figure – 60|5|30m.

    But I think the real answer to your question is that there is no standard.
     
    Last edited by a moderator: Aug 18, 2011