Re: CS>Marsha's Method for CS

2000-10-18 Thread Robert L. Berger
Hi Alain, The CC adapter is of value to those who are using batteries. Nine volt batteries do not like the high current that I measured using a good poer supply. Does the water made form snow have a chemical taste? Have we polluted your snow up there? If it tastes all right then give it a try. J

RE: CS>Marsha's Method for CS

2000-10-18 Thread Chouinard, Alain
> > Absopure DW; Initial I = .72 ma.; the current at the half way > point (30 > min) before wipe was 3.39 ma. and after wipe was 2.24 ma. > After a total > of 60 minutes the current before wipe was 75.2 ma, and after > wipe it was > 14.0 ma. The Conductance was 38 uS and the PPM = 17.6 . > >

Re: CS>Marsha's Method for CS

2000-10-18 Thread Ode Coyote
Perhaps a good way to accomplish that would be to simply drain the cell slowly out the bottom into a storage container with a petcock. When the cell is empty, the CS is done and the drain rate determines PPM. Ken At 05:18 PM 10/17/00 -0400, you wrote: >Hey Bob. You might give this a try. Us

Re: CS>Marsha's Method for CS

2000-10-17 Thread Robert L. Berger
Hi Marshall; I might give it a try, but not now as I am making a setup to use vacuum in place of CO2 in the arc method. I can't send the TEM photos on the list as they are 969kB in size and Mike would have a fit. Its going to be hard to beat spherical particles in the 1-2 nm and the 6-8 nm size

Re: CS>Marsha's Method for CS

2000-10-17 Thread Marshall Dudley
Hey Bob. You might give this a try. Use constant voltage AND current with stirring. Basically make it so the electrodes can be removed from the water incrementally, and slowly pull the electrodes out of the water as current tries to increase. Once calibrated you could make CS of whatever ppm yo