Hi all,
So I've got the Hanna HALO pH meter, HI12302, and wondering if it can be repaired or I need to toss it. I've had it about a year, and it had been working great. I found it recently tipped on its side, so the storage solution looks like it seeped out of the holder, and it was sitting dry.
I'm now unable to calibrate it. I emailed Hanna, and they have told me that the electrode is bad and the HALO is not designed to be fixed, so it would need to be replaced.
Putting the pH meter in buffer solutions I get the following readings:
For buffer 4.01, it measures stable at 7.16 ph @ 72.9 F
For buffer 7.01, it measures stable at 9.42 @ 72.7 F
I've allowed the meter to soak in 4.01 solution for over 48 hours without any change. I've also tried a 15 minute soak in dilute HCl, again without change.
Would replacing the reference solution possibly fix this? I noticed what looks like a sealed fill hole on the side. Perhaps it would be possible to remove the seal, drain and replace, and reseal it?
So I've got the Hanna HALO pH meter, HI12302, and wondering if it can be repaired or I need to toss it. I've had it about a year, and it had been working great. I found it recently tipped on its side, so the storage solution looks like it seeped out of the holder, and it was sitting dry.
I'm now unable to calibrate it. I emailed Hanna, and they have told me that the electrode is bad and the HALO is not designed to be fixed, so it would need to be replaced.
Putting the pH meter in buffer solutions I get the following readings:
For buffer 4.01, it measures stable at 7.16 ph @ 72.9 F
For buffer 7.01, it measures stable at 9.42 @ 72.7 F
I've allowed the meter to soak in 4.01 solution for over 48 hours without any change. I've also tried a 15 minute soak in dilute HCl, again without change.
Would replacing the reference solution possibly fix this? I noticed what looks like a sealed fill hole on the side. Perhaps it would be possible to remove the seal, drain and replace, and reseal it?