How to store PH Meter & PH LOW!?!

[pjewett]

Just picked up a Milwaukee PH600 Meter...calibrated it using the test solution and took my first reading.

With lights off in DT & lights ON in refuge I get a reading of only 7.8! Will test again when lights come on. I guess it's the swing that matters?

3 questions about this meter.

1. How accurate is this model considered?
2. Discard sample packet of calibration fluid after use?
3. Instructions say "ALWAYS KEEP PH PROBE WET WITH WATER" & "DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES." Then how do I store it? Could it be attached so that it remains dipped in the fuge?

Thanks all!

 

[KathyC]

Milwaukee makes good probes
Not unusual to find the PH at 7.8 in the AM when the lights haven't been on.
Yes, you are supposed to discard the fluid after you calibrate.
You can either buy the storage solution (easier than making it), or you can leave it hanging in the tank or fuge. It will last longer is you use the solution from what I understand as constant use wears the probe out faster. ( I hear that the typical life of a probe is 1 1/2 years under constant use, longer if stored and used).
This is one of the places that sells the storage solution:
http://www.eseasongear.com/ph600.html

 

[pjewett]

Milwaukee makes good probes
Not unusual to find the PH at 7.8 in the AM when the lights haven't been on.
Yes, you are supposed to discard the fluid after you calibrate.
You can either buy the storage solution (easier than making it), or you can leave it hanging in the tank or fuge. It will last longer is you use the solution from what I understand as constant use wears the probe out faster. ( I hear that the typical life of a probe is 1 1/2 years under constant use, longer if stored and used).
This is one of the places that sells the storage solution:
http://www.eseasongear.com/ph600.html

Great! at $25 I think I'll leave it in the fuge. That's about $1.40 per month (over 1.5 years) to have constant PH readings.

THANKS

 

[pjewett]

Well it's been 45 minutes since the DT light came on and PH only went from 7.8 to 7.9 so that's pretty good.