Re: Mixing of VD solutions to alter contrast

[Carl Weese <cweese@earthlink.net>]

Sandy,

In the VDB instructions recently posted by Wynn White on Ed's site I
believe he mentions using dilute potassium dichromate as an additive (a
drop of 1%, 2%, etc) to the sensitiser mixture to raise print contrast.
This is analagous to adding ammonium dichromate or potassium chlorate to
raise contrast of a Pt/Pd mixture. ---Carl

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