Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,879   Posts: 1,520,373   Online: 1098
      
Results 1 to 5 of 5
  1. #1

    Join Date
    Oct 2011
    Location
    Ringerike, Norway
    Shooter
    35mm
    Posts
    132

    Colour of Citrin stop bath?

    I bought a soft-pack of Citrin stop bath from Macodirect (http://www.macodirect.de/citrin-citr...ck-p-2196.html). According to the label it has an indicator, but which colours it will change from and to was not specified. When I first mixed it it had a clear purple colour. After a three rolls and a week in a plastic bottled-water bottle it has paled noticeably. Surely three rolls can't deplete 1,5 liters of stop bath? The bathroom floor is not particularly warm, a tray of water stored next to the chem bottles with a thermometer in it showed 20-22 C all week.

    Is the stop bath bad? Is this colour change normal even if not depleted, or does stop bath go bad in a week even if barely used?

  2. #2

    Join Date
    Oct 2004
    Location
    Rome, Italy
    Shooter
    35mm
    Posts
    883
    If you get 1 kg of citric acid you'll spend about 10€ and you'll have a lifetime long supply of stop bath. Used one-shot.
    I'd use one-shot also the Citrin.

  3. #3

    Join Date
    Oct 2011
    Location
    Ringerike, Norway
    Shooter
    35mm
    Posts
    132
    The stop bath has gone completely transparent, but pH strips say it's more acidic than the fixer, so I'm going to guess it's still good.

  4. #4

    Join Date
    Aug 2004
    Location
    Dunedin,New Zealand
    Shooter
    Multi Format
    Posts
    268
    I would suspect a manufacturing fault. Most indicator stops turn purple when exhausted.

  5. #5

    Join Date
    Oct 2004
    Location
    Rome, Italy
    Shooter
    35mm
    Posts
    883
    Use plain citric acid at 15g/l one shot. Buy it at your local pharmacy.



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin