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Aqua-regia
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[*] posted on 27-10-2015 at 09:51


Easy, cause was a handycam video very close I gained from this a foto with vlc media player
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aga
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[*] posted on 27-10-2015 at 10:26


Quote: Originally posted by NedsHead  
The Uranium glass bowl I found in a second hand shop for $2

How did you know it had Uranium in it ?




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[*] posted on 27-10-2015 at 16:25


Quote: Originally posted by aga  
[/rquote]
How did you know it had Uranium in it ?


The shop had a heap of Uranium glassware, probably all came from the same collection, the bowl was an odd piece that didn't match any of the sets in the collection but looked to be the same glass
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violet sin
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[*] posted on 27-10-2015 at 16:56


in the past I have rewired a couple dollar store LED flashlights with UV LED's for identification purposes. They work great. Just unsolder the crappy white ones and replace with eBay versions. There are keychain version of UV lights that can be used as purchased, occasionally found randomly.
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The Volatile Chemist
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[*] posted on 27-10-2015 at 17:14


Quote: Originally posted by violet sin  
in the past I have rewired a couple dollar store LED flashlights with UV LED's for identification purposes. They work great. Just unsolder the crappy white ones and replace with eBay versions. There are keychain version of UV lights that can be used as purchased, occasionally found randomly.

I had one for a while from a kid kit, but at twelve, everything was better when hooked up to a nine volt battery...The LED turned a great violet color for a second, got very bright, then burnt out. Oh well, AS&S sells $8 UV lamps, which is crazy cheap. Gonna buy some when I get my next order.




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violet sin
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[*] posted on 27-10-2015 at 17:34


You can get a 50pc pack of UV LED's for less than that. I finally whittled my pile down to 5 or so. Time to buy more I guess. Took me quite a few years and many small projects.
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[*] posted on 27-10-2015 at 17:45


A Feller and his tripleneck
IMG_20151026_115521_795_zpsdzaz8v8r.jpg - 119kB
w00t
IMG_20151026_113732_299.jpg - 227kB
View out the "front" door
IMG_20151021_172452_600.jpg - 680kB

[Edited on 10-28-2015 by arkoma]




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Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.

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violet sin
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[*] posted on 27-10-2015 at 18:38


Awe man, that.looks.like great fishing! Jealous a lill bit.
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arkoma
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[*] posted on 27-10-2015 at 19:05


33°18'14.66"N
93°43'50.55"W




Quote:
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Eddygp
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[*] posted on 28-10-2015 at 06:51


He is back!! :D



there may be bugs in gfind

[ˌɛdidʒiˈpiː] IPA pronunciation for my Username
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Brain&Force
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[*] posted on 28-10-2015 at 11:49


The absorption spectrum of holmium sulfamate, I used an LED and diffraction grating with the solution to get a spectrum and photographed it with my phone.

<blockquote class="imgur-embed-pub" lang="en" data-id="appmfzf"><a href="//imgur.com/appmfzf">Taken with a diffraction grating, camera, and LED light.</a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>




Raney nickel can't hydrogenate dank memes.
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JJay
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[*] posted on 28-10-2015 at 12:49


Quote: Originally posted by arkoma  
A Feller and his tripleneck

w00t

View out the "front" door


[Edited on 10-28-2015 by arkoma]


How do you keep your thermometer out of the stirring vortex?
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violet sin
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[*] posted on 28-10-2015 at 12:56


What LED did you use to do that? Also, is the diffraction grating just a bit of CD cut to a convenient shape? It's pretty cool! I had wondered if there was a convenient file to burn to a disk to provide a solid background for the grating or if a blank CD is used. I remember the kits people bought that used a piece of CD/DVD for the grating, but of course there are readymade versions.

If you don't mind, could you post a pic of the setup you used? I find this interesting. Amongst other things I need to clean up, I have a 100ml or so of CoCl2 that would definitely be colored enough to show. I bet the solution I got from leaching Osage orange sawdust would be interesting as well. Bright yellow and it fluoresces green/yellow/orange depending on a few factors. Roots, bark or wood and concentration strength. Thanks for the share
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[*] posted on 28-10-2015 at 15:00


Arkoma, nice place, great glassware :)
Quote: Originally posted by Dmishin  
Quote: Originally posted by The Volatile Chemist  
Too bad I don't have a fume hood to quickly make some ammonium sulfate.


If you are going to try 2NH3+H2SO4, then it is not really needed, reaction finishes instantly, if acid is sufficient and reagents are mixed well. However, if your reagents are concentrated (at least, more concentrated than 10% NH3 and 43% H2SO4, I used), mix could start boiling.

Ammonium sulfate can also be bought as fertilizer (haven't seen though), and of course, chemicals shops have it, in good purity.

If you have a lot of ZnSO4, and don't mind wasting half of Zn, using fertilizer ammonium nitrate (or chloride) is an option. Double Zn-NH4 sulfate is much less soluble than its constituents. Mix concentrated, hot solutions of ZnSO4 and NH4NO3, and double salt will precipitate:

2ZnSO4 + 2NH4NO3 + 6H2O -> (NH4)2Zn(SO4)2*6H2O ↓ + Zn(NO3)2

(haven't tried exactly this reaction, but it must work)

[Edited on 26-10-2015 by Dmishin]

I was referring to the fume hood for catching gasses if I were to boil off the water. I hate having to do this if any of the reagents are acids.
If this procedure does work, I'll have to try it (with ammonium chloride and zinc sulfate. Not because I particularly desire ammonium chloride, but I do like the production of double salts, and this one sounds interesting.




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[*] posted on 31-10-2015 at 15:43


Added some hot ammonium dinitrosalicylate solution to an erlenmeyer containing some other waste solutions of nitrophenols, upon cooling down this was the result, covered the entire bottom. :)

Waste crystals.jpg - 129kB

[Edited on 31-10-2015 by nitro-genes]
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[*] posted on 5-11-2015 at 13:45


Birefringence in a triglycine sulfate crystal.

biref-bigDSC01293.JPG - 338kB

[Edited on 5-11-2015 by Dmishin]
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[*] posted on 6-11-2015 at 05:45


Nice crystal Dmishin,

Would this crystal separate a non-polarized laser beam in two? Making the two beams polarized?
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[*] posted on 6-11-2015 at 06:33


The joy of playing in a lab that makes tons of fluorescent compounds. These are NDIs :D

*Obviously under U.V light.



[Edited on 6-11-2015 by Firmware21]

Dem TLC.JPG - 1.3MB
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[*] posted on 10-11-2015 at 15:22


Both of the last two photos are sweet. Chromatography of fluorescent compounds... :)
I'm going to try to make some thin plates for chromatography this weekend.




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[*] posted on 17-11-2015 at 02:57


Potassium chlorate crystals found in my cell electrolyte after being in the fridge for two days:

[Edited on 17-11-2015 by greenlight]

20151117_165843.jpg - 3MB




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[*] posted on 17-11-2015 at 05:07


Nice Potassium chlorate crystals greenlight, I haven't seen chlorate crystals like that before, the structure looks similar to Bismuth
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[*] posted on 17-11-2015 at 06:35


They definitely are Potassium chlorate. After electrolysis of Potassium chloride the cell contents were left at room temp for 2 days and then put in the fridge and left for a further three days to precipitate the rest.
The whole top layer was a blanket of these joined crystals.




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[*] posted on 17-11-2015 at 19:47


Nice. Sounds like a successful prep. Try decomposing some in a flame, if you haven't already :)



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[*] posted on 17-11-2015 at 21:54


Copper phosphate finally dried out:


IMG_2498.JPG - 202kB




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[*] posted on 18-11-2015 at 00:04


Quote: Originally posted by greenlight  
Potassium chlorate crystals found in my cell electrolyte after being in the fridge for two days:

[Edited on 17-11-2015 by greenlight]


They make hopper crystals? Cooooool.
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