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ADOX Fotoimpex
03-23-2013, 10:49 AM
66168

We now have two versions of ADOX COLLOIDA photogelatin.

One is the product which has been out for almost two decades now: A photographic coating gelatin in order to make an under- or overcoat in the work with liquid emulsions. This is now called ADOX COLLOIDA "R" (http://www.fotoimpex.de/shopen/chemistry/adox-colloida-r-photo-gelatine-for-use-with-photo-emulsions-250-gr-not-sensitized.html).

Next to this known product we now have a true precipitation gelatin (Ansatzgelatine) to make film or paper emulsions.

This is called ADOX COLLOIDA "P" (http://www.fotoimpex.de/shopen/chemistry/adox-colloida-p-photo-gelatine-for-use-with-photo-emulsions-250-gr-not-sensitized.html).

We placed them in different sections in the webshop but I wanted to announce this here as well so everyone knows which is the right product for him/her.

If you own a bottle of COLLOIDA without "P" or "R" it is coating gelatin!

Best regards,

Mirko

AgX
03-23-2013, 11:19 AM
I guess "P" stands for precipitation but what is the meaning of the "R"?

ADOX Fotoimpex
03-23-2013, 12:22 PM
I guess "P" stands for precipitation but what is the meaning of the "R"?

In this case "R" as in "Regular". Could have been "S" for supercoating or "U" for undercoat or a simple "C" for coating.
"C" would have probably been a good choice as well but now the labels are printed ;-)

Mirko

anikin
03-23-2013, 01:07 PM
Mirko,

I'd love to buy it. Do you have a distributor in USA?

Eugene.

ADOX Fotoimpex
03-23-2013, 01:39 PM
Yes we do: Freestyle.

They donīt carry this item yet but asking them to take it on is always a good idea ;-)

Photo Engineer
03-23-2013, 01:51 PM
Mirko, congratulations.

Best wishes with the launch of these products.

PE

JOSarff
03-31-2013, 06:47 PM
Mirko:

Do you have a distributer in Canada? Thanks

Joe

Jerevan
04-08-2013, 12:24 PM
So - what does this mean, in practice? That the "R" version is useless for making emulsions? How does a precipitation gelatine differ? Higher/lower bloom, or other things that differ?

dwross
04-15-2013, 09:21 AM
Mirko,

Product education might increase sales.

fwiw,
d

ADOX Fotoimpex
05-04-2013, 07:12 AM
So - what does this mean, in practice? That the "R" version is useless for making emulsions? How does a precipitation gelatine differ? Higher/lower bloom, or other things that differ?

You can use it for precipitation but if you want consistant results you should choose the precipitation version. Basically P is the selction from the selection. The purest batches which have a narrower difference in bloom index get chosen as precipitation gelatin whilst the specs are not so strict for coating gelatin.
I think the bloom index is also shifted a bit because from the coating gelatin usually the top layer is manufactured which is on one end of the viscosity bandwidth of a coating package. But this can also be adjusted by other means. I donīt really know this last point for sure.

I am sorry for the late reply but I didnīt know this thread had developed later on.

Mirko

Jerevan
05-04-2013, 03:18 PM
Thank you Mirko for the answer. :)

Philippe Berger
08-04-2015, 03:14 AM
Mirko or other Carbon Printer,

What is the best ADOX COLLOIDA photogelatin R or P ? for the Carbon TIssue for te Carbon Transfer Process
Thank you for you respons to mineurdecharbon@skynet.be

Best

chrisaisenbrey
08-04-2015, 04:14 AM
Hello Philippe,

As far as I understand the ADOX COLLOIDA P is cleaner. For reproducible silver gelatin emulsion making this is important since the emulsion reacts very sensitive to impurities. And you want to add the "impurities" yourself in a controlled manner.

For carbon printing this is not so important. More important is the “strength” of the gelatin. I get my gelatin from:

http://www.phototypie.fr/search.php?tag=g%C3%A9latine+photo



By the way congratulations to your color carbon print!

Chris

Philippe Berger
08-04-2015, 11:07 AM
hello,

Thank you for the informations for the photographic gelatin. I don't know this website

You usu this for your Carbon

Thank you for my Carbon Color

Best

Philippe

chrisaisenbrey
08-04-2015, 12:09 PM
Yes I use the 225 Bloom gelatin for carbon printing.

They have actually a beautiful website about Collotype/ Phototypie/Lichtdruck:

http://www.phototypie.fr/wordpress/visite-guidee-phototypie/

However if I once start with emulsion making I will go for the Adox P gelatin.