pH Meter Storage Solution

Immerse the tip (2.5cm) of the pH electrode into the sample and stir gently.

After completing measurements, switch the meter off and store the electrode with a few drops of storage solution (MA9015) in the protective cap.

Click to expand...

Wynne-R said:

Ok Guys, I have a quick question. I just got a Milwaukee MW 101 pH meter, and it’s as much fun as a new toy can be. My problem is that the owner’s manual puzzles me.



Here’s my question; If I need to stick this thing an inch into the solution to get a good reading, how is a few drops of storage solution going to do anything?

Is there a downside to immersing it? You know, ten drops instead of a few.

Click to expand...

Wynne-R said:

Thanks RC, AJ.

As long as it doesn’t go dry, we’re good, apparently. Odd the way they worded it. Usually manufacturers are very careful about stuff like that.

Click to expand...

ajdelange said:

The idea is to keep the bulb from drying out. The cap is doubtless designed to trap the moisture from the solution. This is sufficient. Potassium chloride creep is a most interesting phenomenon. I think helium close to absolute 0 is the only other substance that exhibits it. You should replenish the storage solution from time to time because of the creep. Immersion will not, AFAIK, harm the bulb. I always store my electrodes with the bulb immersed and I've been getting 2 or more years life out of them.

Click to expand...