Forte Polywarmtone Paper Speeds

[rshepard]

I was just given a couple of opened 25-sheet packs of Forte Polywarmtone FB paper (one is Elegance PWT Art with an ivory finish, the other PWT with a glossy finish). To maximize their use in printing negatives I need to know the ISO speed of these papers. If you know what those speeds are, or have a reference to where I can find them, please let me know.

If such data are not available, I'll need to determine the speeds myself; probably with cut sheets to conserve paper.

TIA,

Rich

 

[ath]

You can take the values from the ADOX Polywarmtone, it is the same paper.
However, I'm under the impression, that these values are not very correct. Polywamtone is roughly 4 times (2 stops) slower compared to Ilford MG IV or Agfa MCP.

 

[naaldvoerder]

Is this helpfull?


ILFORD filters
Parameters without 00 0 1 2 3 4 5
R 100 150 130 110 90 80 70 60
P 160 50 50 50 50 40 25 25

KODAK filters
Parameters without -1 0 1 2 3 4 5
R 100 140 120 110 100 90 70 60
P 160 100 100 100 100 80 25 25

DURST color enlarger head
Parameters without 150Y 100Y 30Y 20M 50M 100M 150M
R 100 150 130 100 90 80 70 70
P 160 50 64 100 100 80 64 50

Saved from Forte's website

Jaap jan

 

[rshepard]

Thank you Andreas and Jan.

When I searched the Web with Google for the paper speed the Forte website did not show up. Since I have a color head on my Beseler enlarger, I can convert the Durst values.

Much appreciated,

Rich

 

[bdial]

If the packages are sealed, there should be a datasheet. If not, I could send you a scan if you want. Let me know.

 

[Bruce Osgood]

SNIP.... Forte Polywarmtone FB paper (one is Elegance PWT Art with an ivory finish, the other PWT with a glossy finish). end snip
TIA,

Rich

I have the poop sheet from a box of Polygrade V Elegance Fiber Based Paper that says the papers ISO speed is 400 without filtration.

 

[ann]

the polywarmtone is 160 if i remember correctly. the paper Bruce is talking about is not the same paper.

 

[rshepard]

If the packages are sealed, there should be a datasheet. If not, I could send you a scan if you want. Let me know.

Thank you. That would be handy to have. I'll give you my email address in a private message so it's not too available for spammers.

Rich

 

[rshepard]

the polywarmtone is 160 if i remember correctly. the paper Bruce is talking about is not the same paper.

Ann,

That's in line with the first two replies. Thank you very much.

Rich

 

[Ray Heath]

g'day Rich

how is it useful to know the ISO of printing paper?

Ray

 

[bdial]

It's useful when you're switching from other papers and looking get an equivalent exposure. For me, all of my contacts are on Ilford, but I may or may not choose Ilford for a printing session.
Here is the data sheet. If you have problems reading it, pm me with an email, and I can send a better version.