pH Probe Calibration Solution?

[mike]

there is a calibration solution called ph7, im pretty sure thats the name. its sold at plant and hydroponic stores.

[mike]

its ph 7.0 by general hydroponics. less than 10 bucks.

[Enigma]

Thanks! I just phoned Quick Grow, and they have it. Since my bus passes right by there on the way home from work, that works out perfectly.