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HP5, Rodinal, Slosher Tray

Discussion in 'B&W: Film, Paper, Chemistry' started by Shawn Dougherty, Jun 9, 2009.

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  1. Jun 9, 2009 #1
    Shawn Dougherty

    Shawn Dougherty Member

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    I've got a nice system worked up using 4x5 FP4, Rodinal and a slosher tray. My N is 18 minutes at 1:100 with agitation for the first minute and 5 seconds of agitation every minute for a total of 18 minutes.

    I just bought 4x5 HP5 to gain some much needed speed and wonder if anyone is using this setup and if so do you have any suggestions for starting points - ISO and times at 1:100? I'll do my own testing but it's always helpful to have some insight into where to start.

    Thanks in advance. Shawn
     
  2. Jun 10, 2009 #2
    Lee L

    Lee L Member

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    Shawn,

    Ilford suggests 11 minutes 68F at 1:50. After looking at Ilford's times for FP4+ and HP5+ at 1:25 and 1:50, then at your time for FP4+, it looks like something in the 13.5 minute range might be a good starting point, although I wouldn't be surprised if it went a bit longer in practice.

    I did try HP5+ in R09 + sodium ascorbate with a touch of borax a few years ago in 35mm. It looked really good, but I slightly preferred PC-TEA and I didn't work out a final time for that combo.

    Lee
     
    Last edited by a moderator: Jun 10, 2009