Quote Originally Posted by Photo Engineer
Add spectral sensitizing dye and hold at 45 deg for 15 mins.

So is this where an emulsion starts as blue sensitive and is then made to be orthochromatic or pancromatic?
Sorry if this is an ignorant question but it must happen somewhere in the process.
Also, another question I've wondered about is making silver nitrate. If you disolved as much silver as could be in nitric acid and then air dryed it down to silver nitrate crystals would this give you good enough silver nitrate for an emulsion such as this.