Aqua Master Tools S300 Pro 2 Substrate pH/Temp Meter - 0.0-14.0 pH Range - 90 cm Electrode Cord

Check Substrate pH and Temperature On the Spot - Handheld Meter

Guessing at root-zone pH leads to nutrient uptake problems you only notice after plants show stress. The S300 Pro 2 reads pH and temperature directly in soft, moist substrate or liquid, with automatic temperature compensation and 2-point automatic calibration to keep readings consistent. It measures pH from 0.0 to 14.0 with a stated accuracy of ± 0.1 pH.

This is a single handheld unit. It suits home growers who want to check media and solutions, and it works equally well for commercial growers who need a portable spot-check tool alongside fixed monitoring in hydroponic systems.

Key Features & Benefits

• 2-point auto calibration (4.0 and 7.0 pH) — calibrate quickly, with an indicator that confirms correct calibration.
• Automatic temperature compensation — readings adjust across 0°C to 50°C (32°F to 122°F).
• Replaceable probe — swap the electrode instead of replacing the whole meter.
• 90 cm electrode cord — position the probe while holding the meter comfortably.
• IP65 housing, IP67 electrodes — built to handle damp growing environments.

Who Should Use Aqua Master Tools S300 Pro 2

Anyone cultivating in soft, moist media or hydroponic systems who needs fast pH and temperature checks: home gardeners, indoor growers and commercial cultivation teams.

About Aqua Master Tools S300 Pro 2

The S300 Pro 2 is a digital handheld meter with a pH range of 0.0 to 14.0 and a temperature range of 0°C to 50°C. Resolution is 0.1°C for temperature. It runs on 3 included 1.5 V AG-13 button cell batteries, shows a battery indicator and powers off automatically after 8 minutes.

Frequently Asked Questions

Q: How do I calibrate the meter?
A: The meter uses 2-point automatic calibration at 4.0 and 7.0 pH. A calibration indicator appears when calibration is correct. Manufacturer videos on calibration are available through the distributor.

Q: Are batteries included?
A: Yes. It uses 3 × 1.5 V AG-13 button cell batteries, and they are included. A battery indicator shows when power is low.

Q: Can I replace the probe?
A: Yes. The probe is replaceable, which extends the life of the meter.

Q: What does automatic temperature compensation mean?
A: pH readings shift with temperature. The meter measures temperature and adjusts the pH reading automatically across 0°C to 50°C (32°F to 122°F).

Q: Is it water resistant?
A: The meter is rated IP65, and the electrodes are rated IP67 waterproof. Treat it with care and store it properly after use.

Q: How long is the electrode cord?
A: The cord is 90 cm long.