Frequency of probe calibration

[kevensquint]

Hi , I am a DA user and ATM am looking at switching to Apex. Since many functions are based on accurate probe readings ( temp, pH, salinity). What is the normal calibration period for these probes? Each month? 6 months?.......etc. thanks

 

[slipknotgrrl83]

I do mine every 6 months. I occasionally check then against red sea test kit (ph) and refractometer (sg) just to make sure they read close or even better, the same. Temp I check against a good old glass thermometer

 

[Daniel@R2R]

I think 6 months is the recommendation...but I may be wrong. #Apexusers

 

[iemsparticus]

It's recommended to calibrate them every 60 to 90 days. 2-3 months.

 

[Daniel@R2R]

It's recommended to calibrate them every 60 to 90 days. 2-3 months.

See! I was wrong. Thanks for helping us with this question @iemsparticus.

 

[iemsparticus]

See! I was wrong. Thanks for helping us with this question @iemsparticus.

No probs!

 

[Scott.h]

As long as mine are giving me the numbers that I like, never! Usually I am in tune enough to know when one is drifting. Sometimes 2-3 months on the conductivity, sometimes longer then 6 months on ph.

 

[maroun.c]

Is the conductivity probe working well for anyone? Mine keeps shifting up and down regardless of calibration.

 

[Scott.h]

@maroun.c Mine stays even with my refractometer for about 3 months before drifting down a touch. Like 34 shifting to low 33s after that. It's two bucks for the calibration solution so I order one when I make an order to keep one on hand.

 

[kevensquint]

Thanks