JefferyH
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Plastic attachments to hold liquid-tubes onto condenser?
Too many times in my home lab running simple experiments have I had my hose pop lose from the condenser and spray cold water everywhere.
Recently begun a summer lab course and there are these peices attached to where the hose goes, that allows the hose to be plugged in and then
tightened with a plastic screw/bolt type system. Probably a really poor description but maybe somebody will know what I am talking about. Some sort of
attachment that goes over the glass where the water enters and exits? Not really sure what to search for to find these online.
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cyanureeves
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i have been using those stretch tubes used for exercises and have not needed any clamps at all,i know it didnt answer your question but its a cheap
option.
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JefferyH
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Those could work. I would still like to find out what those metal pieces are called though.
Where did you get those stretch tubes? The ones I am aware of for exercises are usually far larger than the condenser inlet/outlet
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cyanureeves
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they often come in to a christian donation center where i volunteer hours,different color bands and grab handles made of hard plastic tubing.the hoses
stretch nice and tight over my liebig and ahlinn condensors.i think a person's foot goes into one end of the stretchy things like a stirrup and the
other end is used to pull with your hands.i used to see commercials on t.v. where they were also tied to a door knob.people buy stuff then give up on
exercise equipment and just live happy and die fat, i guess.
[Edited on 5-17-2014 by cyanureeves]
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JefferyH
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I know what you're talking about, but I figured they were too big. I suppose the material is really thick making the inside much smaller than the
outside.
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subsecret
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You might want to use that yellow latex hose, though it is slightly expensive (about 1 USD per foot). If you moisten the end, it slides really well
onto a hose barb. If this is insufficient, you could wrap some thin wire around it to keep it secure. I also found some very nice rubber tubing on the
Home Science Tools website. It's by far the best water tubing I've used. Link is provided.
http://www.hometrainingtools.com/rubber-tubing-5-16-x-10/p/C...
Fear is what you get when caution wasn't enough.
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Mailinmypocket
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The plumbing section at Home Depot sells pre cut 10ft lengths of the yellow latex tubing. Perfect for attaching to glass connections but as
awesomeness says, sort of pricey... Then again I have been using the same two 5ft pieces for two years now so, it's worth it
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aga
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Ty-wraps maybe ?
If they're Metal, i think they're called Jubilee Clips in the UK, if this image is what you mean :-
http://www.absolute-koi.com/images/categories/C1000.jpg
Re-reading your question, i don't think either is what you mean, but may help.
[Edited on 18-5-2014 by aga]
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JefferyH
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I'll look at home depot for the tubes. I have been using the somewhat hard-clear rubbery plastic tubing, but its not very flexible at all.
I think I have seen a video somewhere of the plastic-screw attachments... maybe I can find it.
Will these home depot rubbery tubes be sustainable enough for vac-distllation? Getting my vacuum tubes to stay attached, or getting them on in the
first place, have proved challenging due to the unflexibility of the tubes I've been using.
[Edited on 18-5-2014 by JefferyH]
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Mailinmypocket
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No they collapse under vacuum. The clear plastic tubing is better for vacuum lines but they get very rigid when you run cold water through them which
is why the pop off condensers and whatnot.
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pichoro
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I too thought you meant these: http://www.micromatic.com/draft-keg-beer/fittings-pid-705.ht... I actually do use these on my condenser, although I'm careful not to tighten so
far that they would crush the glassware.
I also know they make clamps for this. The ones I've seen are an off-white plastic that close with teeth that remind me of a zip tie, except they can
be undone to loosen them back up.
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ScienceHideout
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I know exactly what you are talking about, but I think that you have to have a condenser that was made for those and comes with them. Is this what you
are talking about?
http://chemglass.com/product_view.asp?pnr=CG-1210-HC
"Removable hose connections"? They are threaded if I am not mistaken.
hey, if you are reading this, I can't U2U, but you are always welcome to send me an email!
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Burner
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I have been using this type of hose clamp (http://www.coleparmer.com/Product/Acetal_Copolymer_Hose_Clam...) for years with rubber tubing for all of my cooling needs. Works like a charm and
they are totally reusable. I bought a large assortment on Ebay for 10USD for my home lab.
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pichoro
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Those are the off-white clamps I was talking about!
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JefferyH
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That's it!
So the condenser has to be threaded?
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Dr.Bob
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There are about 10 or 20 different plastic connectors that I have seen for connecting hoses and glassware. The threaded fittings are used by a few
companies, but are expensive to replace the fittings. Since they have to be made that way from the start, they are rare.
Most glass ware has a hose barb, which works well with rubber/latex tubing, best with a wire or zip tie to secure them. Tygon can be often used, but
needs to be softened with a heat gun or the tube soaked in acetone for 10-30 seconds to allow it to flex over the barb. And there are many other
quick fit type connectors that can be used, depending on the tubing type, these go from simple plastic connectors to swadgelock type connectors.
The Cole Parmer catalog has a ton of them available. (www.coleparmer.com/).
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ScienceHideout
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I think that if I were you I would try Expediglass. They have a HUGE variety of condensers of pretty good quality...
hey, if you are reading this, I can't U2U, but you are always welcome to send me an email!
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