 |
 |
 |
|
 |
|
 |
|
 |
|
 |
|
 |
|
|
14-01-2007, 04:53 PM
|
#1 |
|
Guest
Posts: n/a
|
PH Pen calibration
Please help, when you do calibration on your PH pen, would you use both PH 4 solution and PH 7 solution or...... either one will do?
Thank you very much. |
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
| Display Modes | |
|
|
Threaded Mode