megan23247
Sexy Female Grower
- Joined
- Mar 19, 2008
- Messages
- 549
- Reaction score
- 978
Ok this may be a stupid question but I just got my Electronic PH tester and It says I need to calibrate it first by dipping the sensor into the selected Buffer and when I get the right PH then hit CAL etc... Well my question is what do I use as a buffer just water mixed with either PH up or PH down to CAL the right buffer which has to either be a 4, 7 or a 10? Im confused. Hope that makes sense.