Re: [APML] recommendations for development of tech pan

[Chuck Vaughn <aa6g@aa6g.org>]

Kirk,

> D19 is a powder and the entire packet has to mixed so its' useful 
> shelf life is less.

This is not required. I weighed out enough D19 to make 16 oz batches 
for years and it worked fine. To increase the lifetime of the powder I 
now divide the package up into 8 some sealable plastic bags and store 
them in the freezer. I just used some that had been in the freezer for 
nearly 2 years. It had not oxidized.

Chuck <aa6g@aa6g.org>

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo