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Acetone vs butanone
Look for methyl ethyl ketone (MEK or 2-butanone). I'd choose via desired miscibility with water. Ace ... |
10-6-2016 at 16:42
by: Ozone |
polymers
This is kind of ridiculous. Not all polymers dissolve in the same solvents. Dissolution of polymer i ... |
13-5-2016 at 20:14
by: Ozone |
Red Cabbage pH juice - can it be stored?
It also tends to oxidize and polymerize in air (sinking brown stuff). So, to keep it for any time, I ... |
10-5-2016 at 16:21
by: Ozone |
Eriochrome black T wanted
I prefer calmagite, but both can be found on Ebay:
http://www.ebay.com/itm/HACH-calmagite-analyti ... |
10-5-2016 at 03:48
by: Ozone |
Help ID microrganisms
A scale would help, but otherwise, nice microscopy. What set up are you using?
Aside, the first l ... |
8-5-2016 at 07:53
by: Ozone |
Homemade and Repurposed Lab Gear
Pretty cool. Avoid holes at the edges, though. These will allow for channeling of sample through a p ... |
3-5-2016 at 17:33
by: Ozone |
Is there a way to setup a rotovap so it condenses back into the main flask? An adapter of some kind?
Mine is actually setup for this. There is a valve that shuts off condensate flow to the collection f ... |
20-4-2016 at 04:06
by: Ozone |
Caustic Vapor from adding Sodium Hydroxide to water?
Tiny droplets get carried up with the steam.
O3 |
11-4-2016 at 18:48
by: Ozone |
is this a good vacuum pump?
Here's one. It's a diaphragm pump, so much more forgiving if you aspirate stuff into it. It is also ... |
9-4-2016 at 04:02
by: Ozone |
Bad Habits In The Lab
See note #1:
http://www.orgsyn.org/demo.aspx?prep=CV1P0314
O3 |
4-4-2016 at 11:28
by: Ozone |
Electrochemistry
We have one:
http://www.sciencemadness.org/talk/forumdisplay.php?fid=9
O3
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1-4-2016 at 19:35
by: Ozone |
Homemade spectrometer analysis of rhodamine b
OK. That makes more sense. Raman. It would have been helpful to have mentioned that in the beginning ... |
31-3-2016 at 15:39
by: Ozone |
ppm to mg/l conversion? & expressing concentration by percentage
ppm (ug/g, mg/kg, whatever) / 10000 = % w/w. 1E6 ppm = 100%. Stick with mass, and you'll be OK. Othe ... |
29-3-2016 at 20:02
by: Ozone |
Homemade spectrometer analysis of rhodamine b
While that is cool, I think you should talk more about your design. Both rhodamine B and methylene b ... |
29-3-2016 at 15:36
by: Ozone |
Removing/neutralizing TFA from carbamate
You might also try dumping some pre washed/pre-dried weak base anion exchange resin in there. It sho ... |
28-3-2016 at 18:44
by: Ozone |
Dissolve Styrofoam? Nah...
I'm thinking that if it won't dissolve in acetone, it isn't styrofoam, e.g. expanded polystyrene. Th ... |
25-3-2016 at 04:19
by: Ozone |
unknown layer in reaction?
My guess is that you denatured the enzyme during isolation. 70°C is too hot for this. Also, even if ... |
21-3-2016 at 11:02
by: Ozone |
Cellulose extraction
You can also treat the wood, plant fiber, whatever (after reducing particle size, so start with smal ... |
18-3-2016 at 17:58
by: Ozone |
Bad Habits In The Lab
These young 'uns don't seem to understand how things used to be in the labs that made nearly everyth ... |
17-3-2016 at 19:53
by: Ozone |
Bestine = 100% heptane? It doesn't seem like it.
I will note that the rubber cement smells clearly like heptane (or, at least it used to).
O3 |
11-3-2016 at 20:20
by: Ozone |
EXTRACTION
I'm guessing this (and only because it piqued my interest):
Media:
http://www.sciencealert.com ... |
11-3-2016 at 19:15
by: Ozone |
Boron esters
We were doing this in distilled DMSO, which is both a supreme pain in the ass and probably unnecessa ... |
11-3-2016 at 18:25
by: Ozone |
Boron esters
Because you are dealing with a diol, and they are on the same plane, I'm thinking that you will get ... |
10-3-2016 at 21:58
by: Ozone |
Recrystallization problems
Although the translation is poor (the images are better), you may have better luck isolating them in ... |
8-3-2016 at 14:39
by: Ozone |
Phenol Disposal
Just drop the whole piece in a bucket of water, wait a while, and carefully pour the whole thing dow ... |
22-2-2016 at 16:51
by: Ozone |
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