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Types of Separatory Funnels.. Options
 
WarriorSage
#1 Posted : 6/29/2012 9:46:16 AM

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Hey guys, just wanted to know some information of separatory funnels, like which one will suit best, and different valvue sizes/stopcock etc. I will be using it mainly with xylene and hcl.


Here are a few that are available for me:
I'm willing to pay whatever, but not sure what will suit. I have done some research already, but not exactly sure.


1# "Presented here is a borosilicate 1000 mL conical, separatory funnel with a 27 / 22 ground glass stopper, a 4 mm tapered ground glass stopcock and a 67 mm stem"

2# "Offered here is a borosilicate 500 mL conical, separatory funnel with a 24/33 ground glass stopper, a 3 mm teflon stopcock and a 66 mm stem. Teflon stopcocks never require grease and they will not freeze or bind"

3# "500mL 24/40 Separatory (Addition) Funnel with glass stopper and PTFE plug
Pear shaped, 24/40 joints on top and bottom
PTFE (Teflon) stopcock"

That is just a few, and i know there is also polyethylene separator, are they any good?


Thanks to anyone who can help with some suggestions and experience Big grin

The Warrior’s Prayer
"I am what I am. In having faith in the beauty within me I develop trust. In softness I have strength. In silence I walk with the gods. In peace I understand myself and the world. In conflict I walk away. In detachment I am free. In respecting all living things I respect myself. In dedication I honour the courage within me.
In eternity I have compassion for the nature of all things. In love I unconditionally accept the evolution of others. In freedom I have power.
In my individuality I express the God-Force within me. In service I give of what I have become.
I am what I am: Eternal, immortal, universal, and infinite. And so be it"
 

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endlessness
#2 Posted : 6/29/2012 10:00:04 AM

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Get a 1l one. Dont get anything with PE, since some solvents may be incompatible with that. Get borosilicate glass funnel with a PTFE stopcock. But most importantly, make sure the stopcock is the type that spins endlessly instead of the ones like a tap that you can screw tightly to close.

So this kind



NOT this kind



I say this because you the second type, you may try to force it properly closed and the glass breaks (I say this from experience, was NOT nice to have the separatory funnel break in the middle of an extraction). The first type, if the stopcock is in vertical position the flow is open, if its horizontal it's closed, and you can just keep spinning it endlessly, it doesn't force the funnel glass.
 
WarriorSage
#3 Posted : 6/29/2012 10:12:56 AM

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Okay that sounds great, I will make sure I buy one of those then Smile
Thanks heaps for your time and effort!! Thumbs up
The Warrior’s Prayer
"I am what I am. In having faith in the beauty within me I develop trust. In softness I have strength. In silence I walk with the gods. In peace I understand myself and the world. In conflict I walk away. In detachment I am free. In respecting all living things I respect myself. In dedication I honour the courage within me.
In eternity I have compassion for the nature of all things. In love I unconditionally accept the evolution of others. In freedom I have power.
In my individuality I express the God-Force within me. In service I give of what I have become.
I am what I am: Eternal, immortal, universal, and infinite. And so be it"
 
rabies_70
#4 Posted : 7/1/2012 6:35:37 AM

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I prefer a PTFE stopper as well.
Ray
 
WarriorSage
#5 Posted : 7/1/2012 8:46:41 AM

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Posts: 171
Joined: 25-Jun-2012
Last visit: 17-Jun-2013
Location: Antarctica
It has been orderedBig grin
The Warrior’s Prayer
"I am what I am. In having faith in the beauty within me I develop trust. In softness I have strength. In silence I walk with the gods. In peace I understand myself and the world. In conflict I walk away. In detachment I am free. In respecting all living things I respect myself. In dedication I honour the courage within me.
In eternity I have compassion for the nature of all things. In love I unconditionally accept the evolution of others. In freedom I have power.
In my individuality I express the God-Force within me. In service I give of what I have become.
I am what I am: Eternal, immortal, universal, and infinite. And so be it"
 
 
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