Aqua Master Tools S300 Pro 2 pH Electrode - BNC Connector - Glass Tip

Replacement pH Probe for Your Substrate Meter - 7.9 in Long

A worn or damaged pH probe makes readings unreliable, and unreliable readings make it hard to manage nutrient solutions and substrate. This replaceable electrode is made for the Aqua Master Tools Substrate pH/Temp meter S300 Pro 2. You detach the old probe, connect the new one, calibrate, and carry on measuring.

Sold as a single electrode, this unit suits growers who already own an S300 Pro 2 and need a spare or a replacement. Hobbyists and commercial teams running several meters can order one per meter.

Key Features & Benefits

• Made for the S300 Pro 2 — matches the meter it is designed to replace the probe on.
• BNC connector — the probe attaches to and detaches from the meter without tools.
• Glass tip — the sensing end is glass, the type used for pH measurement.
• Plastic body — the rest of the electrode is plastic.
• Protective storage case — keeps the tip protected between uses.

Who Should Use Aqua Master Tools S300 Pro 2 pH Electrode

Anyone who owns an Aqua Master Tools S300 Pro 2 meter and needs to replace an aging or damaged probe. It suits home gardeners and licensed commercial growers who monitor pH in hydroponic systems or substrate.

About Aqua Master Tools S300 Pro 2 pH Electrode

Aqua Master Tools lists this electrode as a spare part for its Substrate pH/Temp meter S300 Pro 2. It has a glass tip, a plastic body and a BNC connector. The manufacturer recommends storing it with KCl storage solution in the protective case. It is sold individually and measures 7.9 x 3 x 2.2 in as packaged, with a shipping weight of 0.189 lb.

Frequently Asked Questions

Q: Which meter does this electrode fit?
A: It is made for the Aqua Master Tools Substrate pH/Temp meter S300 Pro 2. Compatibility with other meters is not stated, so check before using it elsewhere.

Q: How do I install it?
A: Detach the BNC connector of the old electrode from the meter and connect the new one. Then calibrate the meter as described in the user manual. The manufacturer also offers a how-to video.

Q: How should I store the electrode?
A: Keep it in its protective case with KCl storage solution, as the manufacturer recommends. This helps protect the glass tip between measurements.

Q: What is a BNC connector?
A: BNC is a push-and-twist connector commonly used for probe cables. Here it joins the electrode to the meter, so swapping probes needs no tools.

Q: Do I need to calibrate after replacing the electrode?
A: Yes. The manufacturer's directions include calibrating the meter after connecting the new electrode, and the meter is ready for use once that is done.