DIY pH calibration solutions?

[Llarian]

I finally got some pH 7 and pH 10 calibration solution so I could recalibrate the pH probe for my Aquacontroller, and it was reading a whopping .4 high! No wonder I couldn't keep my pH low enough. :/

I haven't seen calibration solutions locally (although I might've missed them), but is there any way to use RO+DI water and some chemicals to create your own 7 & 10 pH solutions?

-Dylan

 

[jezzeaepi]

Not sure about making your own calibration solution, but Barrier reef is where I get mine locally.

 

[DonW]

You can get close with salinity but with ph your not going to get as close as a commercial buffer. Even some of the commercial buffers are not all that great.

http://www.reefkeeping.com/issues/2005-02/rhf/index.php

Don

 

[scubajames]

Caliberate

theres a plant growing supplier in Edmonds right on 99 that sells caliberation fluids.

 

[Llarian]

Ah, I thought I had seen that article, but I couldn't find it again before. Thanks.

I'll check out the brands available at barrier reef.

-Dylan