[pure-silver] Re: under-developed?
----- Original Message ----- From: "Janet Cull" <jcull@xxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, February 18, 2007 4:14 PM
Subject: [pure-silver] Re: under-developed?
Richard, does the hc110 age seem ok to you? If I marked it correctly, it was Sept 06. Doesn't seem like it was that long ago. Maybe I've done it since and that's an old date, but I'll have to assume it's 9/06 since that's the last mark. 

Thanks!

Janet
Thats about 5 months. If you have any left make a "clip test". Take a scrap of 35mm film (or actually any film but 35 is convenient) and develop it in a little of the developer. The light struck scrap should become very black in normal development time. If the developer has become weak with age the film will come out gray. In general diluted developers don't last long. That is because the actual amount of Sulfite or other preservative in it is not sufficient to absorb all the oxygen its exposed to. I don't have expected life figures for HC-110 at working solution but they are probably not more than six months in a filled and sealed container. Kodak's age predictions are quite conservative and usually developers will last quite a bit longer than the chart ages indicate, but, the longer any developer sits around the more likely it is to have oxidized and lost some strength. 

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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