Description
Digital pH Meter Test Pen – 0.00–14.00 pH with ATC
Get quick, accurate pH readings for drinking water, reverse osmosis (RO) systems, aquariums, hydroponics, and coffee brewing. This pocket-sized pH meter pen features Automatic Temperature Compensation (ATC), simple calibration, and a bright display for everyday testing at home or on-site.
- Measurement range: 0.00–14.00 pH with ATC
- Resolution: 0.01 pH | Accuracy: ±0.1 pH (typical)
- Three-point calibration (pH 4.00 / 6.86 / 9.18 buffers)
- Large, easy-to-read display with hold function
- Includes calibration powders & protective cap | 12-month warranty
Why choose this pH meter
- ✔ Fast, reliable pH testing for tap, filtered, RO and remineralised water
- ✔ ATC helps keep readings consistent across common water temps
- ✔ Simple calibration using included buffer sachets
- ✔ Portable & durable — ideal for plumbers, aquarists, and home users
- ✔ Great with RO — verify pH after filtration or remineralisation
Best for
- • Checking tap vs. filtered/RO pH
- • Aquariums & hydroponics stability
- • Coffee/tea water tuning
- • Pool/spa spot checks (not a substitute for full pool test kits)
How to use
- Turn on the meter and remove the cap. Rinse the electrode with RO/distilled water.
- Immerse the probe in a fresh sample cup; gently swirl and wait 3–5 seconds.
- Press HOLD to freeze the reading if needed; note your result.
- Rinse the probe after testing and replace the cap.
Tip: For RO systems, measure both tap and RO/remineralised water to confirm your setup is performing as expected.
What’s in the box
- Digital pH meter pen (with protective cap)
- Calibration powder sachets: pH 4.00, 6.86, 9.18
- Quick start guide
Technical specifications
- Range: 0.00–14.00 pH
- Resolution: 0.01 pH
- Accuracy: ±0.1 pH (typical, at 25 °C)
- Temperature compensation: ATC (approx. 0–60 °C)
- Functions: Data Hold, Auto Power-Off
- Power: Button cell batteries (included)
Care & calibration
- Calibrate on first use, then periodically (or after heavy use).
- Use fresh buffer solutions; rinse the probe between solutions.
- Do not store the electrode in distilled water — use electrode storage solution or keep the cap on and the tip moist.
Dial in taste & purity with RO
If your pH or taste isn’t where you want it, a Reverse Osmosis (RO) system with remineralisation can help. Explore compact under-sink options with professional installation.
Warranty & support
- 12-month limited warranty
- Local support in Ireland
- Need help choosing or interpreting readings? Browse drinking water systems or contact our team.
Frequently asked questions
Does it need calibration out of the box?
We recommend a quick calibration before first use and every few months after, or more often with heavy use.
What buffers should I use?
Use pH 6.86 as a midpoint, then pH 4.00 or pH 9.18 depending on the range you typically measure. Sachets are included.
Can I test RO or remineralised water?
Yes. It’s perfect for verifying RO output and checking pH after remineralisation cartridges.
How should I store the electrode?
Keep the tip moist using electrode storage solution or a few drops in the cap. Avoid distilled water for storage.
