Bluelab PH pen questions:
.Do you need the EC 2.77 calibration bottle or is it okay to just buy the 7.0Ph and 4.0ph bottles?
.I’m assuming it’s fine to buy less expensive brands as long as they’re 4.0 and 7.0?
- 1 Reply
The EC 2.77 is not for the Ph pen all you need to calibrate the Ph pen is the 4.0 and 7.0
the 2.77 is for their Electrical Conductivity pen that measures EC or Ppm
