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Author: Subject: Retort & Stand Questions
karlos³
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[*] posted on 25-6-2020 at 20:35


Quote: Originally posted by zwt2  
Quote: Originally posted by Sulaiman  
So slow that you may give up chemistry in despair.

When I was getting started, I bought a retort. Then I used it.
Then I bought a real distillation set.

And this is how you do real chemistry ideally.
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arkoma
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[*] posted on 25-6-2020 at 20:57


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.



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Yttrium2
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[*] posted on 27-6-2020 at 13:29


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.


WIN_20200627_14_27_37_Pro.jpg - 129kB



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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[*] posted on 27-6-2020 at 15:15


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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[*] posted on 27-6-2020 at 15:59


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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[*] posted on 27-6-2020 at 18:07


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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[*] posted on 27-6-2020 at 20:06


-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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[*] posted on 4-7-2020 at 13:52


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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[*] posted on 4-7-2020 at 14:40


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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[*] posted on 4-7-2020 at 15:23


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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[*] posted on 4-7-2020 at 15:59


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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[*] posted on 4-7-2020 at 16:23


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 :o

[Edited on 5-7-2020 by Steve s]
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Yttrium2
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[*] posted on 4-7-2020 at 16:26


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.




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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[*] posted on 4-7-2020 at 16:36


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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[*] posted on 4-7-2020 at 17:51


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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[*] posted on 4-7-2020 at 17:59


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

s-l1600.jpg - 93kB


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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[*] posted on 4-7-2020 at 18:46


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.




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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[*] posted on 4-7-2020 at 18:48


no offense meant

I'm not a professional either
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[*] posted on 4-7-2020 at 19:00


Quote: Originally posted by Yttrium2  
no offense meant

I'm not a professional either


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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[*] posted on 4-7-2020 at 19:02


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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[*] posted on 4-7-2020 at 20:03


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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[*] posted on 5-7-2020 at 00:37


Quote: Originally posted by Yttrium2  
no offense meant

I'm not a professional either


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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[*] posted on 7-8-2020 at 02:30


What did you end up going with @Yttrium2?
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Yttrium2
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[*] posted on 8-8-2020 at 10:26


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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[*] posted on 8-8-2020 at 10:35


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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