Re: gum arabic
Christina Z. Anderson wrote:
What company, and what prices?
L. Cornelissen & Son (www.cornelissen.com)
Prices in GBP for 100g; 250g; 500g; 1kg:
Gum Arabic (Kordofan) No. 1 — — 4.25 6.70 11.10 19.95 — —
Gum Arabic (Nigerian) No. 3 — — 4.10 6.45 10.30 18.35 — —
I have used already mixed gum from Bostick and Sullivan, and it's fine,
but too expensive to ship the liquid stuff. I've also tried a powdered
gum that was given to me and I have no idea the origin of, and it was
fine too. So I'm not really being picky! I believe the stuff from
Cornelissen is "lumps". I'm assuming it should be a high quality grade,
since this is intended for fine art pigments.
Kordofan was historically thought to be the best, though many said the
gum didn't make a dif where it came from (Africa, Sudan, Sengal, East
India, Alexandria). Kuehn preferred Kordofan, and then Ghenziri, and
said Senegal gum did not print well, lifting off more readily and
leaving a residue.
Since I have never had much choice in location of gum I never gave it
much thought, actually, but I much prefer the gum Daniel Smith sells
that is very light in color. But I do wonder how much difference gum
makes from the different places....
Christina Z. Anderson
----- Original Message ----- From: "Laura Valentino" <email@example.com>
To: "Alt Photo Process" <firstname.lastname@example.org>
Sent: Thursday, January 15, 2009 9:20 AM
Subject: gum arabic
The company I order my art paper from has gum arabic in 2 varieties:
Gum Arabic (Kordofan) No. 1 and Gum Arabic (Nigerian) No. 3. Any idea
what the difference is? Would either be fine for gum bichromate?
The woman I talked to told me these were for mixing with pigments, and
the Kordofan was favored for watercolor pigments. Thanks!