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Re: Aquatic Plants Digest V3 #1334

> - -----Original Message-----
> From: Brian T. Perkins <btpmsi at email_msn.com>
> To: nfc at actwin_com <nfc at actwin_com>
> Date: Sunday, October 17, 1999 11:02 AM
> Subject: Dontcha love garage sales!
> >I scored some "pocket protector style" pH and Conductivity testers at a
> >garage sale today (no instructions) and I was wondering if any of you
> >experience with these things.  Any help would be appreciated.
> >
> >Ph tester:
> >
> >Red case w/ removable black cap to protect the sensor pen clip and LED
> >readout.  On the front it says "Cole Parmer Chicago, IL 60648 Model
> >5941-00".  When I remove the cap I can see a glass bulb on one side and a
> >white peg or nub of plastic on the other.  This peg is encrusted with a
> >white precipitate.
> >
> >Do I soak this in distilled water or ? to remove the white crustiness?
> >it need to be recalibrated? (how?)
> >
> >Conductivity tester:
> >
> >Blue case w/ removable black cap pen clip and LED readout. On the front
> >says "3",and "Omega", On the back it says Range 10/ 1990 uS.  When I
> >the cap there is a two pronged plastic probe on a metal base on one side,
> >and a round metal disc on the other.
> >
> >
> >Can anyone help me?
> >
> >thanks,
> >
> >Brian
> >
You can clean with just about anything then rinse it with distilled water,
it may be possible to recalibrate it or replace the sensor if it is bad. To
check you might try Cole Parmers web site. I hope this helps.