Reef Angel Forum

there is a test to be done to see if the probe is to be changed?

Calibrate and place the probe into the calibration fluids you used in the calibration.
It should show their value.

yes, I've done 100 times when I put it in the solution pH 4 I get kind ph 4:40

Explane please

Inviato dal mio GT-I9300 con Tapatalk 2

Maybe you ought to try the 7 and 10 if 4 and 7 is not working for you.
Someone else did it with 4 and 7 and got it to work just fine.

I need the probe 4 and 7 because I have to connect the reactor elletrovalvola

Linearity of pH probe is pretty good within all ranges that we use:
http://en.wikipedia.org/wiki/Glass_electrode

Good morning and Merry Christmas to everyone today I calibrated the probe again and me with solution 4 = 4.16 and 7 = 7.02 solution over so I can not right?
I need to update some library?

Looks pretty good.
You just need to let the probes stabilize a little more before you complete and also make sure that the solutions are the same temperature as your tank water.
You will never get exact measurements. This is not a scientific device nor the probe is scientific/lab grade.
Personally, your calibration is fine as it is.
It has a .16 deviation on a 3 ph span.
In the range of pH you are going to be working on, it would mean something like 0.025 ph deviation
I don't think your reactor can even notice this minute difference.
i more bubble inside your reactor can cause more deviation than that...
Just my 2 cents, but if you really want to push to get it down to perfect calibration, please go ahead.

good day yesterday, the solenoid valve is always on, and marks on the reef angel ph 680 up and down, now I have removed the pH probe from the reactor and put into solution pH 4 and pH 6.60 tells me, I try to recalibrate and idem, which I do?
with the reef angel...

What numbers are you getting when doing the calibration?

with ph 4 290 and ph 7 310, the pH probe is rechargeable?, what product I could use to clean it?

No, they are not refillable.
Those numbers don't look correct.

so how should I do? 12 months that have the probe

Do you you have another probe to try?
PM me if you want an RMA number.

No i dont have other prob

Inviato dal mio GT-I9300 con Tapatalk 2

ph non t fuction i think change