![]() |
#4
|
|||||
|
|||||
![]() I would calibrate both of them using 342 ppm NaCl califbration fluid, and then re-check. I know mine is difficult to calibrate (it's a $30 handheld)...so I wonder on its accuracy.
Last edited by Myka; 10-24-2009 at 03:17 AM. |