Digital BW, The Print

Sorry to jump in but.... Tygon is a clear PVC tubing
and has a high coefficient of friction so if you want
fluids to slide easily through your tubing it is not
the right choice.  PVC does not pass air or moisture
though.  PVC is good when you want a highly flexable
tubing that will not fatigue fail.  Silicone will pass
water through it and it also has a high coefficient of
friction.  It is also highly flexable.  If you want
very free fluid movement I would suggest polyethylene
or teflon tubing both of which have very low
coefficient of friction.  Teflon is tough as hell but
not very flexable.  Polyethylene has the best of both
worlds in that it is flexble and has very good fluid
flow.
--- sm7bxd <sm7bxd@...> wrote:
> Nij,
> 
> am I misslead - don't you think it's the tubes?
> 
> Is that one for certain "absorbtion and
> permationresistent" as it 
> must.
> 
> The PDF sais it has waterabsorbion - that indicates
> that it's not
> permationrsitant - nothing about airabsorbtion - and
> not that it's 
> made of "tetrafluoroethelen" - I have a feeling this
> is a cheap one!
> The headline also states it's a "siliconebased" -
> that's the worst 
> ones as I learnt from the friend "hospital
> engineer/designer"!
> Avoid those Silicone ABSORBS water etc - You know
> that as well as I 
> do,
> when placing siliconbased "leakstopers" it hardens
> by the water in 
> the air! Voila!!!
> 
> Remember our tubes shall last for at least a year or
> more and DO it's 
> thing also protecting the ink - things used for
> temporary pumsetups 
> in hospitals are often switched out for many a
> reason - then the 
> requiremensts I stated earlier are not fullfilled!
>  
> But if that's the one - thanks - now I know that I
> have to look 
> elseware. That information was very important for
> me. I mean it Nij - 
> thanks again! Now I don't have to spend time on what
> I have.
> 
> "What's wrong" - I have already described to You
> Nij!
> 
> There is a reason - I'll/We'll find it!
> I think this is at least one of the answers!
> 
> Nij - You helped me!
> 
> Regards
> Bo Wrangborg
> Sweden
> 
> 
> --- In DigitalBlackandWhiteThePrint@y..., "Nij"
> <nigel@m...> wrote:
> > Bo,
> > 
> > What's wrong with what you probably have already?
> Tygon vacuum 
> tubing
> > R-3603???
> > 
> >
>
http://www.tygon.com/new/europe/english/en_europe_index.html
> > 
> > Nij
> > 
> > 
> > > -----Original Message-----
> > > From: sm7bxd [mailto:sm7bxd@y...]
> > > Sent: 15 May 2002 01:04
> > > To: DigitalBlackandWhiteThePrint@y...
> > > Subject: [Digital BW] Re: RED ALERT - Attension
> - MIS Black!
> > >
> > >
> > > Nij,
> > >
> > > no problems by that - I buy another 1290 - I can
> afford 
> that./smile/
> > > Cpmpared to my "Hassle-Blades" Minolta Multi pro
> etc etc it's a 
> minor
> > > cost.
> > > It's expensive and it's fun - LET's have fun!
> > >
> > > I bought the tubes from MIS - they are cheap as
> other real stuff
> > > costs - I have also learnt that every system
> like this are using 
> this
> > > tubeset - none of them have the more expensive
> ones.
> > >
> > > For the wentholes - I have a simple but
> irriytating solution I 
> have
> > > made plastic cones (Not Cones plastic /smile/)
> that I place in 
> this
> > > holes when not in use - but they are not
> "automatic" - I can 
> forget
> > > them.
> > > Erlier I used a plastic bag with a damp piece of
> cloth to get 100%
> > > rel humidity taped it - and it works as well but
> look rediculous 
> when
> > > custumers came for looking at my gear....aren't
> we some sort of
> > > crazy...but we photographers are as well some
> sort 
> of "artists" ...
> > > and dont like that - ahhh plastic bags.hmm....
> > >
> > > Have just made an investigation by friends
> (hospital engineer and
> > > designer for apperatures, also been at
> > >
>
http://nalgenelab.nalgenunc.com/products/catalog/category.asp?
> > > catId=173
> > >
> > > The Nalgene place to have a look - it look
> promising.
> > >
> > > Words to use here : The common tubes are
> permeable letting fluid 
> out
> > > and avaporate AND absorbtic letting air in (It's
> a two way
> > > interference here) (I don't know air may
> corrogate some chemicals 
> and
> > > gibving them other colors, changing the chemical
> formulas etc etc.
> > >
> > >
> > > What I need now for RR (Rolls Roys) is what I
> have learnt are 
> tubes
> > > made of "Tetrafluoroethelene" that is both
> absorbtion and
> > > permationrestistent. I now Nalgen have them -
> but are expensive - 
> but
> > > I dont care!
> > > However, are they elastic enought to give it an
> easy go or do I 
> have
> > > to heat them to have the right bend and
> mobility?
> > >
> > > They also do have selflocking connections - that
> could make it 
> easy to
> > > maintenace the tubes now and then!
> > >
> > > It is to remember that the tubes has a far
> greater relative area 
> to
> > > the air than the bottles - so for me it's
> obvious (also by my
> > > incedent) that this is of great importance to
> evaluate the 
> systems.
> > > Ok this was the first indikation with MIS
> "double black" that has 
> a
> > > lot of carbonparticles in it - however in the
> long term every 
> tube is
> > > affected and build up - to stiff grease like
> things - that can't 
> be
> > > good at all. Investigated the other tubes as
> well - and they also
> > > have grease - but not that much!
> > >
> > > So when printing - are You happy wityh the
> blacks - if not I know
> > > where it's hidden./call me and I'll tell You -
> smile/
> > >
> > > Du Pont have alo such tubes - but not on the
> web! And I'm certain
> > > that industri fellows can help me to further
> deliverants!
> > >
> > > I don't care if the tubes are single - it's easy
> to connect them 
> with
> > > some sort of silicone every 5 cm or so or why
> not tape them with
> > > different colors - making it look like cobras
> /smile/ - have a
> > > suggestion for that one?
> > >
> > > The hunt goes on!
> > >
> 
=== message truncated ===


__________________________________________________
Do You Yahoo!?
LAUNCH - Your Yahoo! Music Experience
http://launch.yahoo.com