Come check out a step-by-step guide to calibrating your Neptune Apex pH probe. Something you should consider doing on a regular basis, especially if you notice a fair amount of drift over time.
0:00 Introduction
0:24 Temp Match Calibration Solutions
1:01 Connect pH Probe to Apex Base Unit (Brain)
1:38 Remove protective end cap
1:51 Select low and high range solutions
2:11 Open Low Range Solution
2:22 Insert Probe into Low Range Solution
3:01 Gently Wiggle the Probe
3:44 Rinse pH Probe
3:58 Repeat Process for Upper Range Calibration
5:13 Calibration Complete!