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karlos³
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Quote: Originally posted by zwt2  |
When I was getting started, I bought a retort. Then I used it.
Then I bought a real distillation set.
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And this is how you do real chemistry ideally.
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arkoma
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Yttrium, if I didn't know better I'd swear you were trolling sometimes, but we know ya here......buy a damn $25 Deschem disty kit and be done. Put the
retort on a stand on your shelf with a couple of guppies in it. Be the coolest fishbowl on the block.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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Yttrium2
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What do you think? Perhaps not big enough for a fish tank,
but perhaps it will work great for about 250mL of solvent
after several runs that is.
or maybe not... Yikes, I really don't want to buy a full distillaton setup and the stands and clamps and all that shit that make it a pretty penny.
[Edited on 6/27/2020 by Yttrium2]
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Eddie Current
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These things make decent wine carafes. I wouldn't bother with chemistry unless you had no other choice.
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JJay
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Cody of Cody's Lab stuck a retort in a sand bath: https://youtu.be/aUzMms62hKw?t=69
Retorts are interesting to me mainly because they are simpler to make than numerous pieces of interchangeable labware.
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Yttrium2
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retorts appear to be blown from tubing but one end of the tubing is wider, near the bulb.
any ideas as to how retorts are blown?
that 500mL one Cody has got sure is a beauty
[Edited on 6/28/2020 by Yttrium2]
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Yttrium2
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-I am thinking of adding some tubing to the end of my retort, that way there is a longer spout, and more surface area for condensation. I have seen
parafilm wrapped around the spout so it forms a coupling between it and a smaller diameter tube, such as polypropylene.
[Edited on 6/28/2020 by Yttrium2]
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Yttrium2
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Is this the next best thing since sliced bread in the stand / clamp world?
https://www.ebay.com/itm/Retort-Stand-Support-Ring-Stand-24-...
it seems pretty inexpensive, the pole comes in two pieces, is this a bad deal? I am about ready to hop on it.
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B(a)P
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The whole thing weighs less than 3 pounds. There is no way the base is heavy enough.
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Yttrium2
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really? its got a foot print, how much should it weigh?
It is a huge price difference.
[Edited on 7/4/2020 by Yttrium2]
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B(a)P
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| Quote: Originally posted by Yttrium2 | really? its got a foot print, how much should it weigh?
It is a huge price difference.
[Edited on 7/4/2020 by Yttrium2] |
Enough that your entire reaction set up does not come crashing down breaking glassware and spreading hot corrosive reaction mixture everywhere.
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Steve s
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I have 3 glass retorts and i love em, never use em but i love em !!
When you think about it these simple bits of glassware kinda changed the world 
[Edited on 5-7-2020 by Steve s]
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Yttrium2
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| Quote: Originally posted by B(a)P | | Quote: Originally posted by Yttrium2 | really? its got a foot print, how much should it weigh?
It is a huge price difference.
[Edited on 7/4/2020 by Yttrium2] |
Enough that your entire reaction set up does not come crashing down breaking glassware and spreading hot corrosive reaction mixture everywhere.
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I think I'll take my chances with the weight of these stands as being satisfactory, If I could get a professional to chime in on the matter, I'd
appreciate it. I think it will support the weight, if it gets knocked into, that is another story, and I think in that scenario it has more to do with
the footprint (center of gravity of the apparatus on the stand, vs the weight of the base)
so could someone else, or someone professional chime in? Hence when did lab stand base plate weight become an issue? (Lately its been said a lot, but
I want to make sure it is not a regurgitation from someone unqualified)
[Edited on 7/5/2020 by Yttrium2]
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Yttrium2
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I mean its not like the distillation apparatus is going to be mounted that far from the center of the rod, so it shouldn't be leveraging on the base
that much. -- and if it did, it would take a heavy apparatus-and a considerably light weight base plate before it was tipped
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karlos³
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You're likely better off, cheaper too, and get a qualitatively superior stand, if you simply build it yourself from scratch.
I build my own with a metal base weighing around 8kg(more or less) and a rod of 70 or 80cm screwed on the plate, and while they work well for most
applications, it still is barely sufficient for some unusually heavier things.
For example, when doing solvent extraction of a larger volumes, like some biosynthesis corresponding to a 1l separation funnel filled almost to the
brim(easily ~1,5l), then it becomes obvious how the heavy funnel is close to the upper limit of what these stands can manage.
A weight like this in the necessary height is a negative impact that destabilises the stands notably.
So think that well thorough, if the little one you consider to buy will be sufficient for everything you're planning to do with it?
[Edited on 5-7-2020 by karlos³]
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Yttrium2
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| Quote: Originally posted by karlos³ | You're likely better off, cheaper too, and get a qualitatively superior stand, if you simply build it yourself from scratch.
I build my own with a metal base weighing around 8kg(more or less) and a rod of 70 or 80cm screwed on the plate, and while they work well for most
applications, it still is barely sufficient for some unusually heavier things.
For example, when doing solvent extraction of a larger volumes, like some biosynthesis corresponding to a 1l separation funnel filled almost to the
brim(easily ~1,5l), then it becomes obvious how the heavy funnel is close to the upper limit of what these stands can manage.
A weight like this in the necessary height is a negative impact that destabilises the stands notably.
So think that well thorough, if the little one you consider to buy will be sufficient for everything you're planning to do with it?
[Edited on 5-7-2020 by karlos³] |
this one is $25 USD, its not the little one
building one requires tools and supplies, as much as i'd love one made from granite. The collapsible nature of it is a + too.
[Edited on 7/5/2020 by Yttrium2]
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B(a)P
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| Quote: Originally posted by Yttrium2 | | Quote: Originally posted by B(a)P | | Quote: Originally posted by Yttrium2 | really? its got a foot print, how much should it weigh?
It is a huge price difference.
[Edited on 7/4/2020 by Yttrium2] |
Enough that your entire reaction set up does not come crashing down breaking glassware and spreading hot corrosive reaction mixture everywhere.
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I think I'll take my chances with the weight of these stands as being satisfactory, If I could get a professional to chime in on the matter, I'd
appreciate it.
so could someone else, or someone professional chime in? Hence when did lab stand base plate weight become an issue? (Lately its been said a lot, but
I want to make sure it is not a regurgitation from someone unqualified)
[Edited on 7/5/2020 by Yttrium2] |
Ouch!
Weight has become an issue because companies are cutting corners in an effort to produce ever cheaper products.
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Yttrium2
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no offense meant
I'm not a professional either
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Tsjerk
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Are you really asking for a professional on an amateur forum? Maybe you should ask your local engineers for advice. Don't forget to check their fee
before doing so, when I give professional advice I charge hefty.
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Yttrium2
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lol
bump,
well, it just seems to me by looking at it that it would be fairly stable.
I'd like to get some responses, going for a walk
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Tsjerk
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It wasn't meant as a joke. And this is a forum, not a chat group, you can bump with new information if you don't get a response in a couple of days,
not in a couple of hours, or even minutes in your case. And I don't care if you go for a walk.
If you think it is stable, just buy the bloody thing and shut up about it.
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B(a)P
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It will take my chemistry ego a long time to get over this.
I just went and measured up my report stand. It was purchased from a laboratory supply company. It cost only about 3 time what you are looking at. It
weighs 3 kg and the base is 180 mm wide by 300 mm deep. Although I am not a professional, this is what the professionals are using
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B(a)P
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What did you end up going with @Yttrium2?
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Yttrium2
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Haven't made the purchase yet, but I'll be going with the cheaper stand for sure $25 USD isnt' bad for the stand and the clamp.
probably get a flexi clamp from united nuclear also
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Yttrium2
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now I've got to figure out how I'll piece together a distillation setup with a claisen adaptor and sep funnel.
the nanshin kit on ebay has been relisted, it is somewhere, -- they took almost everything off due to the covid virus cause I guess they stopped
business or something
+ there is a higher shipping price now
might go with deschem, they have a better thermometer in the kit
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