Fyndium
International Hazard
Posts: 1192
Registered: 12-7-2020
Location: Not in USA
Member Is Offline
|
|
How to process very small volumes?
If you want to test or determine reaction or property, eg solubility, how can you process very small volumes, in order of few mL max so procedual
losses are minimized? I have used centrifuge and test vials, pipettes but filtering and transferring can easily result in smearing the whole volume on
the surface of a glass.
|
|
|
brubei
Hazard to Others
Posts: 187
Registered: 8-3-2015
Location: France
Member Is Offline
Mood: No Mood
|
|
glass pipette or syringe filled with cotton is a easy way to filter/transfert small quantity
I'm French so excuse my language
|
|
|
Fyndium
International Hazard
Posts: 1192
Registered: 12-7-2020
Location: Not in USA
Member Is Offline
|
|
That is a good tip.
|
|
|
TheMrbunGee
Hazard to Others
Posts: 364
Registered: 13-7-2016
Location: EU
Member Is Offline
Mood: Phosphorising
|
|
There are also these, for even less loses and sophisticated filtering.
|
|
|
macckone
International Hazard
Posts: 2159
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline
Mood: Electrical
|
|
Fyndium,
Read up on micro-scale chemistry.
It has a lot of caveats and uses a lot of 1ml syringes and conical flasks and very tiny distillation equipment.
https://www.chemistry.mcmaster.ca/~chem2o6/labmanual/microsc...
|
|
|
Fyndium
International Hazard
Posts: 1192
Registered: 12-7-2020
Location: Not in USA
Member Is Offline
|
|
Thanks for the input. I had totally forgotten the syringe filters.
I've looked up for micro distillation kits, but they usually command a significant price compared to ordinary setups, even in an order of magnitude
higher.
|
|
|
ChemichaelRXN
Hazard to Others
Posts: 103
Registered: 7-10-2010
Member Is Offline
Mood: Universal Eye
|
|
You can also get some B10 size glassware.
http://www.crscientific.com/glassware-assortment-B10.html
I inherited some of this, but I need a few more pieces to complete my set. I really like collecting all sorts of glassware.
|
|
|
ChemichaelRXN
Hazard to Others
Posts: 103
Registered: 7-10-2010
Member Is Offline
Mood: Universal Eye
|
|
Sorry, seems out of stock! rare stuff it seems
|
|
|
Tsjerk
International Hazard
Posts: 3022
Registered: 20-4-2005
Location: Netherlands
Member Is Offline
Mood: Mood
|
|
Can't you filter in something that fits in the centrifuge?
|
|
|
macckone
International Hazard
Posts: 2159
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline
Mood: Electrical
|
|
b10 is 10/18 or 10/13
14/23 or 14/20 is much more common.
https://www.carolina.com/lab-condensers/organic-chemistry-fr...
There are some nice 14/10 microscale kits available as well.
https://www.amazon.com/Kontes-Organic-Chemistry-Microscale-K...
$403.43 - that is not unreasonable.
|
|
|
Tsjerk
International Hazard
Posts: 3022
Registered: 20-4-2005
Location: Netherlands
Member Is Offline
Mood: Mood
|
|
A filter squeezed in an Eppendorf sounds a bit more reasonable than $400
|
|
|
macckone
International Hazard
Posts: 2159
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline
Mood: Electrical
|
|
Tsjerk,
You can't distill in a filter efficiently.
I was going to say you couldn't but I have seen a buchner funnel used as a bong so there is that.
|
|
|
draculic acid69
International Hazard
Posts: 1371
Registered: 2-8-2018
Member Is Offline
|
|
Quote: Originally posted by Fyndium  | Thanks for the input. I had totally forgotten the syringe filters.
I've looked up for micro distillation kits, but they usually command a significant price compared to ordinary setups, even in an order of magnitude
higher. |
A crude micro (well mini) distillation setup can be made from a test tube
And some straight tubing if U use some imagination. Think of a 5ml test tube
with a bubble blown in the bottom and a pipette coming out the side about
a half of the way up above the bubble.instant 2ml miicro retort for cheap.
I've tried finding these sorts of thiings but these mini or micro kits are rare
But i think easily made if U can do without the the gg joints
|
|
|
Herr Haber
International Hazard
Posts: 1236
Registered: 29-1-2016
Member Is Offline
Mood: No Mood
|
|
This nice little suitcase full of 10/19 Pyrex glassware was given to me by a friend with benefits.
I havent used it since but it is complete with vacuum adapter.
When I get into smelly compounds I'll probably use it a lot more 
The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
|
|
|
draculic acid69
International Hazard
Posts: 1371
Registered: 2-8-2018
Member Is Offline
|
|
| Quote: Originally posted by macckone | Tsjerk,
You can't distill in a filter efficiently.
I was going to say you couldn't but I have seen a buchner funnel used as a bong so there is that. |
Interesting.
|
|
|
macckone
International Hazard
Posts: 2159
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline
Mood: Electrical
|
|
draculic,
If you live where drugs are decriminalized or legalized you see a lot of interesting things.
|
|
|
Fantasma4500
International Hazard
Posts: 1677
Registered: 12-12-2012
Location: Dysrope (aka europe)
Member Is Offline
Mood: dangerously practical
|
|
dilute it if you can
if thats impossible you can get autopipettes, theyre pricey but offer great precision plus you can get filter tips of them
|
|
|
draculic acid69
International Hazard
Posts: 1371
Registered: 2-8-2018
Member Is Offline
|
|
Quite stupidly my countries government chooses to keep its head buried in the sand on most drug related issues apart from last year making hemp seeds
and protein finally
legal to use as food and then legalisation of cannabis in one state only which made news for a few days and hasn't been mentioned since.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
