The water will not go faster than the stirrers RPM no matter how big the
spinner is.
You can slow the water velocity down using a high RPM stirrer and small
spinner, but everything [tallness, diameter] becomes interdependent and it
can get tricky...plus, there is a tendency to create a
Any speed that reduces sparklies and grey beard build up on the pressure
side of the water currents on round electrodes, or eddy side where pressure
turns a corner on flat ones.
10-40 RPM works well. 100 might.
Ode
At 04:04 PM 1/29/2009 -0600, you wrote:
What is a good RPM rate or
Ode, The size of the stirrer in comparison with the surface of the
vessel, influences the amount of mass stirred and the turnover. When
defining magnetic stirrer's speeds, one should also include the the size
of the stirrer. for instance a 1/2 magnet creates little turnover at
100 rpm. The
@eskimo.com
Subject: Re: CSMagnetic Stirrer RPM
Ode, The size of the stirrer in comparison with the surface of the
vessel, influences the amount of mass stirred and the turnover. When
defining magnetic stirrer's speeds, one should also include the the size
of the stirrer. for instance a 1/2 magnet creates
Thanks, Ode.
- Steve N
-Original Message-
From: Ode Coyote [mailto:odecoy...@windstream.net]
Sent: Friday, January 30, 2009 7:20 AM
To: silver-list@eskimo.com
Subject: Re: CSMagnetic Stirrer RPM
Any speed that reduces sparklies and grey beard build up on the
pressure side
for the reminder though.
Steve N
-Original Message-
From: frankcuns-r...@comcast.net [mailto:frankcuns-r...@comcast.net]
Sent: Friday, January 30, 2009 8:03 AM
To: silver-list@eskimo.com
Subject: Re: CSMagnetic Stirrer RPM
Ode, The size of the stirrer in comparison with the surface of the
vessel
Hi Steve,
I've had good luck with ~30 to 40 rpm in a pint wide-mouth jar. The
length of the stir-bar can make a difference too; I go for ~ three
fourths of an inch, maybe up to 1-1/2. I get magnets from:
http://wondermagnet.com/
[a great site with all kinds of neat homebrew stuff info]
and
Stirrer RPM
Hi Steve,
I've had good luck with ~30 to 40 rpm in a pint wide-mouth jar. The
length of the stir-bar can make a difference too; I go for ~ three
fourths of an inch, maybe up to 1-1/2. I get magnets from:
http://wondermagnet.com/
[a great site with all kinds of neat homebrew stuff info
What is a good RPM rate or range for a CS magnetic stirrer?
- Steve N
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