AliExpress PH and ORP probes

[HighlandReef]

Has anyone tried the PH or ORP probes from AliEpress?
I am seeing most of the PH probes are in the $5 - $10 range, and the ORP probes are in the $15 range. Much cheaper than the normal probes we have been buying.
I am ordering the conductivity probe to monitor salinity (requires rewiring) and might try one of the orp probes as well.

 

[Fishy888]

Has anyone tried the PH or ORP probes from AliEpress?
I am seeing most of the PH probes are in the $5 - $10 range, and the ORP probes are in the $15 range. Much cheaper than the normal probes we have been buying.
I am ordering the conductivity probe to monitor salinity (requires rewiring) and might try one of the orp probes as well.

Following along as I’d like to know how well they work.

 

[milangupta1]

Can you share the "re-wiring" ? I am trying to figure this out also .. BNC to 4 pin mini-DIN .. which pins does the probe connect to ?

 

[HighlandReef]

Can you share the "re-wiring" ? I am trying to figure this out also .. BNC to 4 pin mini-DIN .. which pins does the probe connect to ?

Here is a screen shot from the other thread.

 

[jdthome]

is there a link to the other thread?

 

[HighlandReef]

is there a link to the other thread?

There is but don’t get your hopes up, lol!
I am already having issues with the AliExpress salinity probe and it doesn’t look like the vendor is very interested in doing anything about it.

 

[HighlandReef]

is there a link to the other thread?

Thread 'Salinity Probes that work with the Apex'
https://www.reef2reef.com/threads/salinity-probes-that-work-with-the-apex.653584/

 

[TheDuude]

I have tried the cheap ones and they we not worth the savings for me as I needed to replace them sooner as they started to drift badly. I like Pinpoint and Apera probes

 

[HighlandReef]

I have tried the cheap ones and they we not worth the savings for me as I needed to replace them sooner as they started to drift badly. I like Pinpoint and Apera probes

I had similar experience with AliExpress salinity probe.
I’ll have to give the Apera probes a try, Thanks!

 

[gbroadbridge]

Has anyone tried the PH or ORP probes from AliEpress?
I am seeing most of the PH probes are in the $5 - $10 range, and the ORP probes are in the $15 range. Much cheaper than the normal probes we have been buying.
I am ordering the conductivity probe to monitor salinity (requires rewiring) and might try one of the orp probes as well.

You get what you pay for.

I'd have zero confidence in a cheap probe.

Even $100 probes can be problematic. It's not until you get to $1000 probes you get accurate and repeatable results.

Perhaps cheap is all you need, but I wouldn't automate anything based on their output.

 

[Lbrdsoxfan]

I have tried the cheap ones and they we not worth the savings for me as I needed to replace them sooner as they started to drift badly. I like Pinpoint and Apera probes

Pinpoint is what I use for orp & ph also. Just replace them every few years, or when they won't calibrate anymore.

 

[Lbrdsoxfan]

You get what you pay for.

I'd have zero confidence in a cheap probe.

Even $100 probes can be problematic. It's not until you get to $1000 probes you get accurate and repeatable results.

Perhaps cheap is all you need, but I wouldn't automate anything based on their output.

This. I can't even with an aliexpress probe. Hard NO thanks.