Chrome Alum for gelatin sizing

MSchuler

Member
Joined
Oct 20, 2004
Messages
141
Location
Seattle
Format
Multi Format
Hello all,

I've just started doing gum bichromate printing and have been following gelatin and chrome alum sizing recommendations by Terry King in Coming into Focus: soak in 2% gelatin; dry; then 2 minutes in 0.5% chrome alum. The color of the alum solution seems to move from light violet to gray after soaking only a few 8x10 sheets of paper. Is this normal? Is any information available on the capacity of the alum bath?

Thanks in advance!
 
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