[pure-silver] Re: Pyro in a Jobo Processor

----- Original Message ----- 
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Thursday, March 17, 2005 9:03 AM
Subject: [pure-silver] Re: Pyro in a Jobo Processor


> Does anyone know what the purported purpose of EDTA in pyro developers
> is?  That is beyond being a calcium sequestering agent.

It helps to avoid aerial oxidation during rotary development, which helps to 
avoid streaking.

Jim 

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