Re: Humidity Challenge for Pt, Pd

Judy Seigel (jseigel@panix.com)
Wed, 14 Aug 1996 00:15:17 -0400 (EDT)

On Tue, 13 Aug 1996, Stephen R. Harrison wrote:
> I have been using a plastic box some 30" long, 8 " high and 12" wide with a
> drugstore cold steam humidifier attached to a hole in the bottom. I've been
> experimenting with humidifying the paper for up to 10 minutes both before and
> after coating but before exposure in my UV light source. The relative humidity
> reads 90% or more in the box. I have not done careful testing with a step wedge
etc...

Thanks. Sounds excellent. Two questions: Would cardboard box work,do you
think, or is there a particular reason for plastic? Also, do you put a
sheet of plastic wrap or mylar between damp paper and negative?

Judy