Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., Robert Rex <chameleon@i...> 
wrote:
(snip)

Robert,

Once again we appreciate you coming through with the hard numbers. 
Museo certainly fulfills all the requirements of a paper that will 
literally last for centuries. 

I really appreciate your efforts to educate us in the area of OBA's 
and I hope that you will be able to pick the brains of your R&D 
wizards to let us know what happens to these chemicals once they stop 
doing their job. To avoid any confusion Museo and other Crane papers 
contain no OBA's.

Thank you,

Martin Wesley


> 
> Martin, all:
> The spec is 7.5 to 9.0 for an uncoated sheet.
> 
> Museo               cold extract:  8.2
>                     hot extract:   8.3
> 
> Regarding, OBA's in the paper, it is my understanding that the UV 
rays end
> up breaking down the OBA's so that they stop flourescing. i don't 
know
> whether chemicals are produced in that process which would affect 
paper
> permanence.  will ask and report back.
> thanks
> robert rex
> PLEASE NOTE:  WHEN REPLYING, ENSURE THAT EMAIL ADDRESS READS--
> 
> chameleon@i...
> 
> 
> IF THE "pop" IS PRESENT IN THE EMAIL ADDRESS, 
> DELETE THE "pop."  
> THIS IS IMPORTANT, 
> OTHERWISE I WILL NOT RECEIVE YOUR MESSAGE.