Re: [APML] Old Royal Gold 200 Hyper time?

[steve banbury <banburys@sonic.net>]

Thanks Don--Its definitely the "old" RG200, but I treated it like the "new"
until too late to do anything about it.
Oh well--maybe there's still enough response left in it to use for tracking
experiments!

At 04:17 PM 9/3/02 -0700, you wrote:
>Steve,
>You have to develop the film to see the difference in the film background
>color due to hypering.
>
>One of the biggest challenges we have with RG 200 film is how to tell which
>one you have.  It is real easy to tell if you hyper it, by how long it takes
>to change the background color (called the rebate color).  At 50°C, the old
>RG 200 takes a couple hours (several APML's use 2 hours).  I found that the
>new RG 200 takes at least 12 hours to barely turn, and 14 to turn a definite
>brownish color.  Develop your roll and you will find out if it was old or
>new.
>
>Don
>
>From: "steve banbury" <banburys@sonic.net>
>
>
>> Thanks Jeff--I did everything pretty much as you described--except the
>part
>> where it cooked it for 9 hours instead of 2.
>>
>> I don't notice a significant change in the undeveloped color of the film
>> backing.
>>
>> Steve
>>
>
>
>
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