pHTestr 1 Instruction card (2 pages)
- 2152774.pdf
- Updated: 08.06.2026
- Need to know more about your Oakton pHTestr 1? This Instruction card summarizes rated values and dimensions, step-by-step operation and servicing and upkeep. ER1 Batteries are low and need replacing ER2 Wrong or bad buffer value (out of range) or the electrode is failing.…