I have two Denver Instrument pH probes that have formed crystals inside of them. The liquid inside them before it crystalized was a 3M KCl solution (potassium chloride). Can someone please give me some ideas on how to dissolve the KCl inside, these are expensive probes and I'd like to be able to salvage them. Thanks for any help!!! Cheers.
2007-10-23 07:13:58 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You could heat them as suggested, but the 3 M KCl is supposed to be inside. So you should add distilled, deionized water back to the probes to dissolve the KCl, and bring them back to the original state. There should be a small opening near the top of the probe through which you can add the water. Sometimes it is plugged with a small rubber stopper. Good luck.
2007-10-23 07:24:06 · answer #1 · answered by Simonizer1218 7 · 0⤊ 0⤋
Denver Instruments Ph Meter
2016-11-06 21:28:22 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Heat would be the most obvious choice of action: stick them in a hot water bath.
A good point brought up from the comment below is that if the crystals did occur because of evaporation of solvent . . . the solution is no longer 3M (and you have no idea of how much water to add unless it's somehow marked). Mix yourself up a fresh batch.
2007-10-23 07:22:13 · answer #3 · answered by supastremph 6 · 1⤊ 0⤋
I second the heat idea. As the crystals shrink they should get small enough to pour out the fill hole. I would get rid of all of it and refill with a freshly prepared 3M KCl solution.
2007-10-23 07:24:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋