pH calibration solution| Off-Topic Discussion forum |

Beer Baron UltimaDork
7/20/15 8:43 a.m.

Because the hive mind is full of surprising information...

Where would I go shopping locally to buy pH buffer calibration solution for calibrating the pH meter in our brewery lab? I know I can get it online, I'd just like to have it ASAP. Hardware store? Pool supply? Aquarium supply/pet store? Target?

tuna55 UltimaDork
7/20/15 8:45 a.m.

Beer Baron wrote: Because the hive mind is full of surprising information... Where would I go shopping locally to buy pH buffer calibration solution for calibrating the pH meter in our brewery lab? I know I can get it online, I'd just like to have it ASAP. Hardware store? Pool supply? Aquarium supply/pet store? Target?

Home Depot or Lowes sell that stuff for pools

rotard Dork
7/20/15 8:58 a.m.

I guess it depends on what kind of regulations you have to meet. I would guess that pool supply stuff is not adequate. Go to vwr.com or something and order the calibration standards for overnight delivery.

stuart in mn PowerDork
7/20/15 9:06 a.m.

There's probably a chemical supply company in your area that sells this sort of thing to city water departments for calibrating their equipment. For instance, http://www.hawkinsinc.com/groups/ covers Minnesota and the upper Midwest.

edit: This looks like a likely source: http://www.gfschemicals.com/

Beer Baron UltimaDork
7/20/15 9:09 a.m.

rotard wrote: I guess it depends on what kind of regulations you have to meet. I would guess that pool supply stuff is not adequate. Go to vwr.com or something and order the calibration standards for overnight delivery.

It's not a regulation thing. This isn't going in a food product. It has to be accurate and precise so that my pH meter is actually calibrated properly to be actually usable.

fasted58 UltimaDork
7/20/15 9:27 a.m.

Steam boiler chemical supplier, there should be plenty around.

rotard Dork
7/20/15 11:08 a.m.

Beer Baron wrote:
rotard wrote: I guess it depends on what kind of regulations you have to meet. I would guess that pool supply stuff is not adequate. Go to vwr.com or something and order the calibration standards for overnight delivery.
It's not a regulation thing. This isn't going in a food product. It has to be accurate and precise so that my pH meter is actually calibrated properly to be actually usable.

Do you use your pH meter for things that have to deal with brewing? Usually the pH meter has to be accurate to within a certain range, which can't be guaranteed without certified, traceable calibration standards. Normally you would get a 4, 7, and 10 pH standards and use those to calibrate it. You also probably need to keep a log of when it's been calibrated.