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Premixed Collodions 

Premixed collodions with different salts ready to use. According to the added salt is a premixed collodion maturation period varies. Generally that:

Cadmium salts - extends lifetime - ripening period is extended

Ammonium salts - shortens lifetime - ripening period is shortened

Potassium salts - shortens lifetime - ripening period is shortened

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always true: after a period of ripening every collodion is aging.
- older collodion has a darker color (to dark red)
- older collodion is losing sensitivity (necessary to expose more)

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If premixed collodion have  a short ripening time, this premixed collodion have a short life time and the reverse is also true.

SHORT Term
ripening time... a few days... 1-3
life time ... a few weeks... 2-3

belongs here "Cadmium Free" collodions: Quick Clear, Lea no.5, Extra Dry, Bohemia, New generation

MIDDLE Term
ripening time... a few weeks... 1-3
life time ... a few months... 2-3 and more

belongs here: Lea no.2, Lea no.7, New Guy, Ambrotype, Old Workhorse, Negative standard, Liliana

LONG Term
ripening time... a few months... 3-6
life time ... one year and more

belongs here: Lea no.3, Cadmiella

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