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Fw: Dontcha love garage sales!
-----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 have
>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? Will
>it need to be recalibrated? (how?)
>
>Conductivity tester:
>
>Blue case w/ removable black cap pen clip and LED readout. On the front it
>says "3",and "Omega", On the back it says Range 10/ 1990 uS. When I remove
>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
>
>
>
>