[Alt-photo] Re: Q FOR SERDAR was LANA AQUARELLE; ACIDIFY?

[Serdar Bilici]

Hi Bob,

No it won't be necessary, because the chemicals are suspended inside the
gelatin layer or the albumen layer. Alkalinity of the paper does not effect
(or its effects are negligible let's say). Lana aquarelle as far as I know
is buffered but not excessively.

If you are not using gelatin for salt prints, there might be fogging
problems, but it can be averted with citric acid addition before coating
with silver nitrate.

Regards
Serdar

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org
[mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
BOB KISS
Sent: 05 Haziran 2013 Çarşamba 17:48
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] Re: Q FOR SERDAR was LANA AQUARELLE; ACIDIFY?

DEAR SERDAR,
	From your statements below saying that acidification was not
necessary for albumen prints, can I assume that it would not be necessary
for salt prints either?
		CHEERS!
			BOB

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org
[mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
Serdar Bilici
Sent: Thursday, May 30, 2013 3:00 PM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] Re: LANA AQUARELLE; ACIDIFY?

Hi Bob,

I have recently tried sullivan's traditional cyanotype formula(includes
oxalic acid and amm. dichromate) with sulfamic acid treated papers and the
results were dramatically better compared to untreated/buffered papers.

If you are doing new cyanotype (Mike Ware's formula), sulfamic acid
treatment (de-alkalising procedure) is a necessary step.

I guess acid treatment/de-alkalizing is a must for pt/pd process with
lanaquarelle paper.

It won't be necessary for albumen.

Regards
Serdar

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org
[mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
BOB KISS
Sent: 30 Mayıs 2013 Perşembe 21:45
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] LANA AQUARELLE; ACIDIFY?

DEAR LIST,

            I just bought some of what B&S calls Lana Aquarelle 140 lb from
B&S.  The info sheet in the pack says that it should be acidified.  Is this
the same paper to which many of you refer as Lanaquarelle?  

            I print mostly pt/pd, cyano, salt and albumen.  For which (or
all>) of these processes should the paper be acidified?  I just bought 
all>an lb
of sulfamic acid from a local chem supplier so, "Have sulfamic.  Will
acidify!" if necessary.

                        THANKS!

                                    CHEERS!

                                                BOB

 

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