Can't help you there, I only use a 38ohm resistor with an LED in circuit.
For 250-300ml using two electrode unit it takes me about an hour to get between 
15-20uS using Comm 100 meter and after perhaps 3-5 days stabilising comes back 
to around 10-15uS?
With a 4 electrode/2 loop setup, 1200ml takes me around 2 hours to reach 
similar.
I don't work on a specific ppm, that's impossible, a 'range' is what I work on.
N.


Date: Fri, 11 Oct 2013 12:25:32 -0400
From: joe.hu...@primus.ca
To: silver-list@eskimo.com
Subject: Re: CS>thumb eczema


  
    
  
  
    Okay, that sounds like something *you* could do.  :-)   I might try
    that.

    I don't have my EIS maker set up yet. I have a LM334Z that will
    limit current if I can find a 68 ohm resistor. I am so slow. Of
    course, I golf a lot.

    If I am using 1 ma in a 1500 ml glass jar at 30 v, how long do I run
    it to get optimum quality EIS? Is there a test to see how good it
    is? If I just let it run for 24 hours or 2 days, is that a problem?

    Joe 

    On 11/10/2013 5:36 AM, Neville Munn
      wrote:

    
    
      
      I can only