I have been doing more work with the all lithium formula. This time I made a batch and split it into three samples so I can try and extend the life of this rapid ripening collodion.
Sample 1 – All Li (Control 1)
Sample 2 – + acetone
Sample 3 – add acetone after 10 days of ripening
Sample 4 – All Lithium formula aged 2 months
Sample 5 – Lea formula 3 Aged 5 months. (Control 2)
This Kodak patent explains how adding acetone to a salted collodion mixture will halt the aging of the collodion.
The idea is to see if I can extend the life of the mixed all lithium formula beyond 1 month.
After aging the samples for 24 hours I made some plates.
Samples 1,2 & 3 all behaved the same – as expected. At one day the all lithium formula is faster than the cadmium version, but not as fast as the lithium formula ripened a week to 10 days.
All Lithium Sample 1 (2 and 3 seconds)
All Lithium – 2 months old (6 seconds) Sample 2 (3 seconds)
Sample 5 Lea Formula 3 (7 seconds)
It looks like at 2 months old the all lithium formula is now as slow as a the cadmium formula.
After 10 days of aging, I retested Samples 1, 2, & 3
At 10 days all were faster. Here are samples 1 & 2 (2 seconds)
Sample 3 with acetone added (2 seconds)
All 3 plates were basically all the same. Easily faster than at 1 day of ripening.
The collodion Samples 1 & 3 both ripened and turned more straw color, but sample 2 stayed the same pale yellow. The interesting bit is that sample 2 was just as fast as samples 1 & 3.
Samples 1, 2 & 3 after 10 days
I also added Acetone to the 2 month old all lithium formula. This has been mentioned in the period literature as a way of extending the life of collodion that has gone off. So far I have not seen a change. The collodion is still dark & red.
More to come!