[pure-silver] Re: how old is too old?
----- Original Message ----- From: "Shannon Stoney" <shannonstoney@xxxxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, April 20, 2009 3:28 PM
Subject: [pure-silver] how old is too old?
I have some HP5+ that goes back to 2005. I've kept it in a cool dry place. Is it too old? Might it be slower or faster or what? 

--shannon
Four years is not very old. High speed film tends to become foggy faster than slow film but HP-5 should still be pretty much like new. I would use it normally but not for applications requiring pushing. A slight uniform fog has little or no effect other than to lower effective speed a little since it adds arithmetically to all densities. Other answer, you have to shoot some to find out if its still OK. A long time ago I bought a couple of bricks of Verichrome Pan. I kept them in the refrigerator but not the freezer. I used the last roll when it was ten years beyond the expiration date. It had become somewhat foggy but still made good printable negatives. A faster film would probably not have lasted that long. 

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