Hi there Frank and list,

> Another article states that the smaller the particles
>the lighter the colour. Clear for  best/smallest, light  yellow for
>acceptable, then onto to brown, green and gray for much bigger
>particles.

I made some clear HVAC CS with a huge particle size (0.114 micron). My
light yellow CS made with 30VDC has a particle size smaller than 0.026 micron.

>Does the conductivity of the solution change as the  ppm goes up? I
>ask this because Bob Lee mentioned in one of his posts that his
>current starts low and slowly rises as it goes along.

Yes. More silver = lower resistance = more current.

Best,
Christian


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