Apera PC60 pH/EC Tester
#1 in Pen testersFull review
A pen that checks pH and nutrient strength together, for hydroponic growers and reef keepers. It is accurate and the probe can be replaced.
Amazon $131.16$131.16
±0.01 pH3-pointEC/TDS, Salinity
3.7/5
A lab-brand pocket tester with a replaceable module, for labs and schools that already stock Oakton parts.
- ±0.01 pHAccuracy
- 3-pointCalibration
- IP67Waterproof
- YesReplaceable probe
Check price at Amazon$136.22
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- ±0.01 pH accuracy and three-point calibration
- Replaceable double-junction electrode module
- IP67, stands upright and floats
Cons
- No warranty published
- Costs more than the similar Apera PH60
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | WD-35634-30 |
|---|---|
| pH measurement | |
| Accuracy | ±0.01 pH |
| Resolution | 0.01 pH |
| Range | -1 to 15 pH |
| Calibration | 3-point |
| Temperature compensation | Yes |
| Other readings | |
| Conductivity (EC/TDS) | No |
| ORP | No |
| Salinity | No |
| Build | |
| Replaceable probe | Yes |
| Waterproof rating | IP67 |
| Battery life | 500 hours |
| Weight | 90 g |
Alternatives in this type
Apera PH60
#2 in Pen testersFull review
The pick for most people who want an accurate pen tester: ±0.01 pH, three-point calibration and a replaceable probe at pen-tester money.
Amazon $79.99$79.99
±0.01 pH3-pointNone
VIVOSUN AeroLab pH Pen
#4 in Pen testersFull review
A low-cost grower’s pen with a replaceable probe. Its maker publishes little beyond the accuracy claim.
Amazon $65.99$65.99
±0.01 pHNone
Compare
Compare the Oakton pHTestr 30 with any other ph meter →
More from Oakton: every Oakton product ranked.