Help calibrating a TDS meter

[Reef Happy]

I have a new milwaukee TDS meter that I think is out of calibration. I have looked all over town for the M10080 calibration solution. Not to be had. I may have to order the solution on line to get the right one. Does anyone have a meter they can bring to the meeting Saturday that I can compare reading to. Maybe I can get mine set that way.

 

[pwhitby]

i have 2 doug.

p.

 

[Reef Happy]

Great. I will bring the water from my filtration unit so we can set the calibration.
Thanks,