Pt. 2:Re: how long will premixed sensitizer last?

William Laven (wmlaven@well.com)
Mon, 30 Sep 1996 21:03:35 -0700 (PDT)

>On Tue, 1 Oct 1996, Beakman wrote:
>
>> I was wondering...
>>
>> If I premixed my platinum and palladium with my ferric oxalate solution,
>> and I kept it in a nice dark brown bottle, in a nice dark place. How
>> long will it last before "changes" begin to occur?
>>
>> David
>>
>
>David, when I worked as a photochemist for Sprint, we experimented with
>combining all three for sale in a platinum kit. We found that when mixed
>together it would last about six months if the bottle was unopened.
>After leaving Sprint and Rhode Island and moving to New Mexico, I found
>myself in the situation of needing to make a print RIGHT NOW and not
>having any decent ferric oxalate, so I tried an old bottle of sensitizer