STPP versus Calgon.

Discussion in 'B&W: Film, Paper, Chemistry' started by Keith Tapscott., Jul 12, 2009.

  1. Keith Tapscott.

    Keith Tapscott. Member

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    Does sodium tripolyphosphate have any advantages over sodium hexametaphosphate? I remember reading some where, that besides being a sequestering agent, STPP also has buffering capabilities. Does Calgon (sodium hexametaphosphate) also have buffering capabilities?