Re: Sizing paper with gum and dichromate

Of course, I am not sure Chris, but I believe you might actually be
using 'formalin', which is 37% formaldehyde. I believe that
formaldehyde iin its pure form is difficult to obtain . . but I may
be incorrect.
Jack Fulton

> Hi Loris,
> I use a 3% gelatin solution, which is probably 2.8% because I use 4
> packets of 7g each Knox gelatin in a liter of water. Then when
> that is prepared (boiled or just heated, depending on whether you
> forget it on the stove or not) add 20ml formaldehyde to the mix and
> brush on. Use right away and toss what you don't. Rinse brush
> immediately after use, too.
>
> I have not used formaldehyde for 7 years...
> Chris
> ----- Original Message ----- From: "Loris Medici"
> <loris.medici@altinyildiz.com.tr>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Monday, December 26, 2005 4:41 AM
> Subject: RE: Sizing paper with gum and dichromate
>
Received on Mon Dec 26 11:08:16 2005