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Author: Subject: Tour My Lab
Lambda-Eyde
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[*] posted on 7-6-2009 at 06:10


Rich_Insane: Check out DP Glassblowing on eBay. I've seen them sell some gently used 19/22 organic chemistry sets for under 100$. Really nice sets with different sizes of flasks, condensers, adapters and such. I can't see any sets like those listed in their eBay shop right now, but it doesn't hurt to ask. :)

For heating, you should definitely get a hotplate stirrer, it's a must! Even I, who doesn't yet have one can testify to that! Try to acquire a nicely used one off of eBay.

To measure your joint size, take a metric caliper and measure the width of the opening and the depth of the joint. The first number (eg 24) is the top width of the joint in millimeters. The second number (eg 40) is the depth of the joint in millimeters. After a while you'll get good at doing visual estimates. ;)

Are you good friends with your chemistry teacher? Try asking him if they have any surplus equipment they could spare. That's how I got my 250 ml Electromantle. :D
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[*] posted on 7-6-2009 at 06:16


Does anyone know of some institutions in the UK that might give me equipment they no longer use (if I ask them very politely!)?
I'm in a similar situation to Risch_Insane...this stuff is not cheap! And if anyone could link me to a website that would sell a fully glass distillation setup...I can't find one anywhere in the country, and shipping from the USA is >£30
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[*] posted on 7-6-2009 at 06:24


Mossydie: This seller is located in the UK, and carries a lot of Quickfit glassware. You could possibly ask him if he could acquire a complete setup?
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Rich_Insane
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[*] posted on 7-6-2009 at 09:30


Unfortunately I'm in a school where budget cut shave affected us pretty bad, so I don't think I could get to much from there.

For a hotplate, what would you recommend? I see quite a few auctions for ridiculously cheap mag stir/hot plates for auction. I see this one for $99 that is also a mag stirrer:

Hot Plate

It is a Chinese one though (I can't understand Chinese, and I'm not sure of the quality). it also comes with free shipping, so that's a plus. I'm worried that all this labware will be purchased, and I will have no money left for actual chemicals.
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[*] posted on 7-6-2009 at 09:37


I saw that one on ebay.co.uk. I have had bad experiences with such cheap, chinese electronics - in general, I never go for something unless the english in the item description is fully comprehensible and in the case of that item it is not. As a general rule, spend more and you will save in the long term because you will have high quality long lasting kit.
There's an American site dedicated to labware auctions:
http://www.labx.com/
Also: www.unitednuclear.com
You probably knew about those, but if not check them out. United nucleaur always makes me envious when I waste some time browsing through it. If only they could ship to the UK...
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[*] posted on 7-6-2009 at 10:57


Try looking at the German eBay. Most of my labware (heating mantles, part of my glassware) is from German sources (old GDR labs). Looking somewhat outdated, but very robust in general. I use these parts already for a long time and have good experiences with that.

I also have bad experience with chinese materials. I purchased HV-diodes and HV-capacitors from a chinese seller. The capacitors were rated at 6 kV, but they broke already at 2 kV :o (giving a tingling noise and becoming conductive) and the diodes simply broke down erratically. Since then I say NO to chinese materials. In the contrary, I have good to very good experience with old equipment from the former soviet union and the eastern european countries. Many of these things were built ridiculously heavily and were ridiculously overrated. Not good at all from an economical point of view, but for home experimenting it is very good, some of my old Russian equipment hardly can be destroyed!




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Rich_Insane
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[*] posted on 7-6-2009 at 16:20


Well the language on the site itself is readable, and they offer a 7-day warranty. It's just that the hotplate/mag stir itself is in Chinese.

Unfortunately I cannot see any good deals on German Ebay (I can't read German either) or UK Ebay. I may order my glassware from Unitednuclear, if i cannot find any better deals.

How does this sound?

$130 for a hotplate/stirrer, $105 for glassware, and $110 for chemicals? Is it possible? I just found out I only have $310, so i need to beg $40 out of somewhere.
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woelen
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[*] posted on 7-6-2009 at 22:34


If you have such a limited budget, then I first would limit yourself to plain experimenting and leave out the hotplate/stirrer. Buy yourself some test tubes, simple glassware and a small propane torch. If you do that, then you can spend $200 or even more on chemicals.

I do not say that a hotplate is not important, but given the limited budget, to my opinion it is not the thing to start with. Who knows what money you can spend next year, I also have taken several years to build up what I have now.

This page may be helpful to you: http://woelen.homescience.net/science/chem/misc/homelab.html
This page describes the basic things, you need as a starter. In due time you can expand your lab.




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pHzero
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[*] posted on 8-6-2009 at 02:49


Quote: Originally posted by woelen  
If you have such a limited budget, then I first would limit yourself to plain experimenting and leave out the hotplate/stirrer. Buy yourself some test tubes, simple glassware and a small propane torch.


What's wrong with a bunsen? You can get them for shade under 4 quid here in the UK (http://www.rapidonline.com/Educational-Products/Science/Labo...). You can then hook that up to a calor gas (LPG) bottle with an 8mm regulator, and it works a charm. Only annoying thing about it is if you use it outside (which I always do), the flame gets blown about quite a bit on windy days.
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[*] posted on 8-6-2009 at 03:09


There's nothing wrong with a bunsen, but for most people, such a thing is not easy to obtain, or more expensive than a simple butane torch from a hardware store. For this reason I mentioned the propane torch. Buy whatever is cheapest, or easiest to obtain.

[Edited on 8-6-09 by woelen]




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[*] posted on 8-6-2009 at 03:13


Quote: Originally posted by woelen  
There's nothing wrong with a bunsen, but for most people, such a thing is not easy to obtain, or more expensive than a simple butane torch from a hardware store. For this reason I mentioned the propane torch. Buy whatever is cheapest, or easiest to obtain.

[Edited on 8-6-09 by woelen]


Ah right, fair enough. Torches are pretty expensive here in the UK, so I think I'll stick with the bunsen :) I might even order a few of them and sell them on ebay - I can probably post them to the US for about a tenner each.
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[*] posted on 8-6-2009 at 03:24


Maybe someone knows good supplier of used hotplate/stirrers in eastern europe or just Europe ?

[Edited on 8-6-2009 by Maja]
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[*] posted on 8-6-2009 at 09:00


Rich_Insane, take a look at this link:
It's a video I made of my spirit burner which took me a few minutes to make and can run on ethanol, methanol, iso-propyl, meths and more.
It works well for bending tubing or heating test tubes, for distillation and other long term heating an old butane gas stove does the job.

Edit: Forgot to actually include the link. Ooops. Here it is
http://www.youtube.com/watch?v=m80i-3iq508&feature=chann...

[Edited on 8-6-2009 by Mossydie]

[Edited on 8-6-2009 by Mossydie]
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[*] posted on 8-6-2009 at 13:47


Mossydie - do you know if anywhere near you sells those stupid backyard tiki torches? If so, look around there for replacement wicks. These are bundled fiberglass with a woven fiberglass sheath over them. They are fireproof and have a high fuel draw rate that produces a large, hot flame. About 1000x better than toilet paper and they only cost a dollar or two.



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[*] posted on 8-6-2009 at 18:44


Ok, thanks everyone.

I will most likely be buying my own bunsen burner. I have a test tube holder already, so pretty much all i need is expanded glassware, and a condenser.
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[*] posted on 9-6-2009 at 03:34


I'll have a look for them - although using toilet paper really appeals to me because of the DIY / minimum requirements aspect. I'm bidding on an ebay item at the moment which is a double mini inorganic chemistry set (old style, glass, mercury thermometers, mini bunsens) and if I win it I'll see if anyone here who's into mini scale stuff might want to do a trade.

Oh and my spirit burner just melted a test tube along with the Zn inside it :)

[Edited on 9-6-2009 by Mossydie]
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[*] posted on 9-6-2009 at 15:41


I was wondering i forgot something... I noticed I do not have a decent scale.

I see some for around $20 that are dental/jewelry/specimen scales, but are those worthy? I can see some 100 g - 0.1 g scales fro 19.99, for Dental Scrap or jewelry.
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[*] posted on 9-6-2009 at 15:45


I bought a cheap one, about £5 and no issue with it yet. But I forsee I'll need a new one in time as it's hardly going to last long. $19.99 seems it should get a decent one.
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[*] posted on 9-6-2009 at 16:54


Alright, that's fine. So a jewelry scale should be fine?
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[*] posted on 9-6-2009 at 17:04


I think for $20 you can't go far wrong and it should at the very least last you until you can afford a better one. Was that lab auctions site of any use? Lots of glassware joblots go as well as more expensive stuff.
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[*] posted on 9-6-2009 at 17:08


Lab Auctions site? Some of those are really good. I do not know which one you speak of, however.

I'll see what I can get, but i doubt I'll need a milligram scale or anything.
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[*] posted on 15-6-2009 at 15:38


Just found this link:
http://blog.makezine.com/archive/2006/09/how_to_make_a_magne...
OK, not as good as a proper one because it wont have speed control. On the other hand, if you're like me and have a load of old computer bits lying around, it's at least £70 cheaper.
I'm making one atm :)
I also made a retort stand by screwing some Al pipe into a wooden base. Took me all of 5minutes. I don't understand how they can cost £16!
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[*] posted on 8-7-2009 at 11:15


Look what came in the mail today:







Enjoy the nerd porn. :D


(Sorry, no ground glass)
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[*] posted on 8-7-2009 at 11:51


Quote: Originally posted by Lambda-Eyde  

(Sorry, no ground glass)


For shame! I have all of two erlenmeyers and my ground glass stuff gets far more use. I actually like my fairly limited equipment sometimes. It forces me to clean up after myself :P

I'm in the market for a 1L erlenmeyer with a 24/40 joint though. It'll go nicely with my new fritted buchner with hose barb.




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[*] posted on 11-7-2009 at 07:12


By clearing out some of the clutter in my garage I have managed to win myself a very small lab area. It has a very long way to go, but it's better than my windowsill and bedroom cupboards for sure.
The whole area:

Organics:

Inorganics:

Lockable Cupboard:

Equipment:

Weird and Wonderful effects on a piece of copper that was electrolysed in conc. Sulphuric acid then left by a sink for a few weeks:


I have ordered a retort and will buy a condenser, I think if I can fit these two together they will serve as a decent full glass distillation setup for the time being.
What should be the next piece of equipment to get?
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