Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: How to process very small volumes?
Fyndium
National Hazard
****




Posts: 453
Registered: 12-7-2020
Location: Not in USA
Member Is Offline


[*] posted on 28-9-2020 at 01:04
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.
View user's profile View All Posts By User
brubei
Hazard to Others
***




Posts: 159
Registered: 8-3-2015
Location: France
Member Is Offline

Mood: No Mood

[*] posted on 28-9-2020 at 01:28


glass pipette or syringe filled with cotton is a easy way to filter/transfert small quantity



I'm French so excuse my language
View user's profile View All Posts By User
Fyndium
National Hazard
****




Posts: 453
Registered: 12-7-2020
Location: Not in USA
Member Is Offline


[*] posted on 28-9-2020 at 04:14


That is a good tip.
View user's profile View All Posts By User
TheMrbunGee
National Hazard
****




Posts: 330
Registered: 13-7-2016
Location: EU
Member Is Offline

Mood: Phosphorising

[*] posted on 28-9-2020 at 05:09


There are also these, for even less loses and sophisticated filtering.



View user's profile Visit user's homepage View All Posts By User
macckone
International Hazard
*****




Posts: 1704
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline

Mood: Electrical

[*] posted on 28-9-2020 at 19:41


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...
View user's profile View All Posts By User
Fyndium
National Hazard
****




Posts: 453
Registered: 12-7-2020
Location: Not in USA
Member Is Offline


[*] posted on 29-9-2020 at 00:46


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.
View user's profile View All Posts By User
ChemichaelRXN
Hazard to Self
**




Posts: 65
Registered: 7-10-2010
Member Is Offline

Mood: Content

[*] posted on 29-9-2020 at 02:34


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.
View user's profile View All Posts By User
ChemichaelRXN
Hazard to Self
**




Posts: 65
Registered: 7-10-2010
Member Is Offline

Mood: Content

[*] posted on 29-9-2020 at 02:36


Sorry, seems out of stock! rare stuff it seems
View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2296
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 29-9-2020 at 08:14


Can't you filter in something that fits in the centrifuge?
View user's profile View All Posts By User
macckone
International Hazard
*****




Posts: 1704
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline

Mood: Electrical

[*] posted on 29-9-2020 at 08:18


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.

View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2296
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 29-9-2020 at 08:33


A filter squeezed in an Eppendorf sounds a bit more reasonable than $400
View user's profile View All Posts By User
macckone
International Hazard
*****




Posts: 1704
Registered: 1-3-2013
Location: Over a mile high
Member Is Offline

Mood: Electrical

[*] posted on 29-9-2020 at 13:06


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.
View user's profile View All Posts By User
draculic acid69
International Hazard
*****




Posts: 992
Registered: 2-8-2018
Member Is Offline


[*] posted on 9-10-2020 at 08:23


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
View user's profile View All Posts By User
Herr Haber
International Hazard
*****




Posts: 890
Registered: 29-1-2016
Member Is Offline

Mood: No Mood

[*] posted on 13-10-2020 at 20:12


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 :)



IMG_3294.JPG - 101kB




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
View user's profile View All Posts By User

  Go To Top