Alcohol free fountain solution & IPA limits

[Lukew]

Always wondered what are the reasons for having an IPA % limit with most alcohol free/reduced fountain solutions.
Usually it will say run IPA between 0 % - 5%. Do not exceed 5% IPA

Interested to know the reasons behind this.

Regards..

[Lukew]

No chemical supplies have an answer to this?

[mazengh]

i remember the Belgian Saphira rep that came to my press house mentioned this also... but wouldn't explain why.

[D Ink Man]

I remember trying to get milk from a bull and could not. I looked at him and pondered, but the bull wouldn't explain why.

[Alois Senefelder]

Lukew,

You shouldn't need to ask why there are limits on IPA addition to F.S - just think about it !!

and I don't mean India Pale Ale.



Regards, Alois

[Lukew]

Yes I need to ask why there is a set limit of max 5% IPA with fountain solutions that are designed for reduced IPA/ IPA free printing.

There could be several reasons:
- The fountain solution doesn't get to work effectively and as it's designed if there is too much IPA
- The IPA free fountain solutions have a high solvent content already and running anymore then 5% IPA would attack the ink too much.

I know that when I accidently dosed to much IPA with a fountain solution that said max 5% IPA we noticed a lot for circumferential banding/ridging on the metering roller

[Dan Roll]

Pale Ale is OK, but living in America I seriously miss me some Victoria Bitter.......

[Lukew]

Pale Ale is OK, but living in America I seriously miss me some Victoria Bitter.......

Victoria bitter, yuck yuck yuck, cheap nasty mega swill.....

Little creatures bright ale or Matilda bay Fat yak

Dan, your not going to give a reason why there is a set limit ?

[Alois Senefelder]

Lukew,



I suggest you read the PDFs I posted on F.S Concentrates, Thread: Smoothers Solids/ Page 2

The link Smoother Solids versus Mottled Solids


Dan, If and when you visit the UK - do try Theakstons Old Peculier


Regards, Alois

[Lukew]

Alois, yep thanks I have read through the PDF's you posted.

I've done some looking through MSDS sheets and the fountain solutions that are suited to run at 8%+ IPA don't contain many glycols.