# Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) vs VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics: specs and price compared

A sourced, side-by-side comparison of the Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) (Oakton Instruments) and VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics (VIVOSUN) among ph meters. VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics is the cheaper of the two at $8.55.

## Side by side

| Spec | Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) | VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics |
| --- | --- | --- |
| US price | $169.3 | $8.55 |
| Brand | Oakton Instruments | VIVOSUN |
| Ph range | — | 0.00 to 14.00 |
| Resolution ph | — | 0.01 pH |
| Accuracy ph | — | ±0.01 pH |
| Calibration points | Three-point, push-button calibration with auto-buffer recognition | 3-point (calibration buffer powders included) |
| Atc | — | Yes |
| Electrode type | Replaceable BNC pH probe | — |
| Waterproof rating | IP67 | — |
| Battery type | — | 2 x 1.5V button cell (built-in) |

## Key differences

- Calibration points: Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) Three-point, push-button calibration with auto-buffer recognition vs VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics 3-point (calibration buffer powders included)

## Sources

- Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14): https://www.amazon.com/Oakton-WD-35634-14-Waterproof-pHTestr-Pocket/dp/B012BSBPFW/ (amazon.com, verified 2026-08-12)
- VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics: https://www.amazon.com/VIVOSUN-Meter-Digital-Tester-Water/dp/B01M5IASHD/ (amazon.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/ph-meters/oakton-phtestr-10-vs-vivosun-ph-meter/
Cite: Per The Front Desk Review, Oakton pHTestr 10 Waterproof BNC Pocket pH Tester (WD-35634-14) ($169.3) vs VIVOSUN Digital pH Meter Pen Tester for Water & Hydroponics ($8.55) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/ph-meters/oakton-phtestr-10-vs-vivosun-ph-meter/
License: CC BY 4.0.