evil_lurker
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Heating mantle questions...
where is the cheapest place to get a 1000ml Glas-Col series O soft hemispherical mantle and controller?
Can I use a variac instead of the pricey controller Glas-Col offers?
What is the max boiling point of materials that can be distilled using such a mantle?
Can a magnetic stirrer be used with a soft mantle?
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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bio2
Hazard to Others
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...........where is the cheapest place to get a 1000ml Glas-Col series O soft hemispherical mantle and controller?.............
Good question!
..........Can I use a variac instead of the pricey controller Glas-Col offers?..........
Yes, but don't go over the 120V rating. Variacs cost
way more than the triac or percentage timer controllers.
.......What is the max boiling point of materials that can be distilled using such a mantle?.......
IIRC the NiCr windings are designed to limit the temperature
to 450 degrees C so somewhere below that or the rating
of the glassware.
.......Can a magnetic stirrer be used with a soft mantle? ........
Yes but with serious loss of torque depending on the distance
between the magnet and stir bar. Some electrical noise
is generated by the magnet in the windings but
this is only annoying and won't harm anything.
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evil_lurker
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Ok last question and I'll shut up.
How the hell do they connect?
I see all the mantles have a 2 wire cord, and the powrtrol controllers have 3 wire plugs.
WTF is up with that?
[Edited on 3-6-2007 by evil_lurker]
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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bio2
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208V to 240V or 120V single phase are both a 2 wire circuit.
220V single phase has 2 hot wires and 120V is one hot
and one neutral.
This in the USA many countries use
380-415V /220-240V with the household being
220-240V which has one hot and one neutral line.
The third wire is a ground to either chassis or earth.
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evil_lurker
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That part I understand.
I wanted to know how the mantle and controller physically attached to each other... all the mantles I've seen sold have 2 prong cords, whilst the
Powrtrol controllers have a 3 prong socket to the mantle and a 3 prong plug to the wall.
Am I correct in guessing that the mantle and contoller plugs are compatable with each other, its just that they throw in a regular two prong cord
conected to a 3 prong cord can run the mantle off a variac? Then if one wants to use a Powrtrol controller all one has to do is take off the 2 prong
cord and hook into the Powrtrol?
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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Magpie
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Looking at the VWR catalog it seems like most of the Glas-Col mantles are 120VAC two wire (neutral, hot) but some are 120VAC 3 wire (neutral, hot,
ground).
The GlasCols that I have are 2-wire and have a special male plug. Therefore, a special GlasCol extension cord is needed with female end that will
mate to the mantle plug. The male end of the extension cord is just a regular 2-pronged plug.
PowerTrols are nice. I don't have one but have used them. The VWR catalog says they are 3-wire. Therefore they are grounded. But I would bet that
they would accept either a 2-wire or a 3-wire GlasCol extension cord male end.
The single most important condition for a successful synthesis is good mixing - Nicodem
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evil_lurker
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Well my mantle and contoller came in today.
The mantle has a 2 prong twist lock plug, and the extension cord is a standard wall plug with twist lock socket on the end that connects to he mantle.
The controller is a triac 1200w rating, with a standard 3 prong wall plug in the rear so the controller will accept both grounded and ungrounded
mantles.
Have not tested the mantle to see what it wil do with a stir bar, but it does get quite hot.
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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Fleaker
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How big of a flask is that?! Looks very nice. Do you have an overhead stirrer for it?
Neither flask nor beaker.
"Kid, you don't even know just what you don't know. "
--The Dark Lord Sauron
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evil_lurker
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12L reaction flask, removable 3 neck head w/ clamps and yes, got stirrer for it.
Only thing missing is a mantle and support stand.
Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in
beer.
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