Is your observation based on experience or on a calculation of how much in
weight of each dichromate salt is needed to produce a saturated solution?
Sandy King
>>>Does anyone have any relative speed comparison between this 2 Dichromate. I
>expose my gum prints with pot. for about 20 mins. I am wondering about how
>much it can be faster with Ammonium. Just a rough estimate would be fine<<
>
>Yes. if your are using a saturated solution the difference should be a
>quarter of the exposure ie :- 5mins rather than 20 mins I hope this helps.
>
>
>
>pete