Calibration Fluid???

[gsxr750]

I have a Daul TDS Meter and was wondering what brand of calibration fluid i should use? thanks

 

[kv2wr1]

BUMP! I'm curious as well. On the back of mine it says to use NaCl which is sodium chloride. I'm assuming they probably mean pure saltwater? It has this imprinted on the plastic housing and it is next to a potentiometer (therer are 2 pots one for each probe). Could this mean to use saltewater that we would use for a water change that has been mixed for 24 hours or is there actually a more pure calibration salt water for this application of a specific salinity?

 

[Mikeygo1]

I would go with TDS, but it you want to try something else Just make sure it is 800 ppm for correct calibration. here is a link.
http://www.petstore.com/TDS_Calibra...quariums-Captive_Purity-RO1353-AQROAC-vi.html