Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,549   Posts: 1,544,636   Online: 681
      
Page 2 of 2 FirstFirst 12
Results 11 to 13 of 13
  1. #11

    Join Date
    Sep 2002
    Location
    Willamette Valley, Oregon
    Shooter
    Medium Format
    Posts
    3,684
    Quote Originally Posted by Robert Hall View Post
    It was my understanding that Metabisulfite
    had a lower ph, is this not true?
    There is no metabisulfite in solution. None we be
    brewing. At crystallization two bisulfites join loosing
    a molecule of water; so the meta. In solution the meta
    joins with water; so two bisufites. The meta is more
    concentrated by one molecule of water.

    Likely there is a source for one and/or the other.
    The ph in solution is that of the bisulfite. Dan

  2. #12

    Join Date
    Jan 2005
    Location
    Boston, MA
    Shooter
    Multi Format
    Posts
    1,416
    Quote Originally Posted by dancqu View Post
    There is no metabisulfite in solution.
    Not that it matters a lot in terms of darkroom mixology, but this is simply untrue. In concentrated solution of sodium bisulfite, metabisulfite is present.

  3. #13

    Join Date
    Sep 2002
    Location
    Willamette Valley, Oregon
    Shooter
    Medium Format
    Posts
    3,684
    Quote Originally Posted by Ryuji View Post
    Not that it matters ... but this is simply untrue.
    In concentrated solution of sodium bisulfite,
    metabisulfite is present.
    "None we be brewing" I did qualify my statement.
    Besides you and I know better. Concentrated
    solution or not, as a species metabisulfite
    will exist at ten to the minus who knows
    how many zeros. Dan

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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