Aquamaster H600 Pro — pH, EC, PPM, TDS and Temperature Meter

The Aquamaster Tools H600 Pro is a handheld meter built for growers who need to monitor multiple parameters of their water or nutrient solution with a single device. It measures pH, EC, PPM, TDS and temperature, backed by the reliability and build quality the Dutch brand is known for.

One of its most practical features is the calibration indicator: once correctly calibrated, the alert disappears and reactivates after 30 days, reminding you when it is time to recalibrate. That way you always maintain accuracy without having to rely on memory.

The meter includes automatic temperature compensation (ATC) across a range of 0°C to 50°C, ensuring reliable readings regardless of the liquid temperature. Ideal for indoor grows with thermal variation or for outdoor measurements.

An important note for growers working with nutrient feeding charts: the H600 Pro uses the PPM 700 scale (conversion factor 0.7), which is the American scale. If your nutrient brand uses the European scale (500 or 500 NaCl), keep this difference in mind when reading PPM values.

The electrodes are rated IP67 (submersible) and the meter body IP62 (splash-proof), so it handles daily use in the grow room without needing to be handled with extra care. It runs on a single 9V battery and powers off automatically after 8 minutes to extend battery life.

It comes in a hard-shell carrying case that protects both the meter and electrodes during transport or storage. Aquamaster recommends storing the pH electrode in KCl storage solution inside the protective cap to extend its lifespan.

Features

▸ 5-in-1 handheld meter: pH, EC, PPM, TDS and temperature

▸ Calibration indicator with 30-day reminder

▸ Automatic temperature compensation (ATC)

▸ Compatible with Aquamaster substrate electrodes

▸ Electrodes IP67 / Meter IP62

▸ Auto power-off after 8 minutes

▸ Integrated battery indicator

▸ Includes hard-shell carrying case

▸ PPM scale: 700 (conversion factor 0.7 — American scale)

Technical specifications

▸ pH range: 0.1 ~ 14.0 pH

▸ EC range: 0.0 ~ 19.9 mS/cm

▸ TDS range: 0.0 ~ 19.99 PPT

▸ PPM range: 0.0 ~ 1999 PPM

▸ Temperature range: 0°C ~ 50°C (32°F ~ 122°F)

▸ pH resolution: ±0.1 pH

▸ EC resolution: 0.1 mS/cm

▸ TDS resolution: 0.01 PPT

▸ PPM resolution: 10 PPM

▸ Temperature resolution: 0.1°C (1.0°F)

▸ pH accuracy: ±0.1 pH

▸ EC/TDS accuracy: ±2% F.S.

▸ PPM accuracy: 10 PPM

▸ Temperature accuracy: ±0.5°C

▸ pH calibration: 2-point, autocal pH 7.0 and 4.0

▸ EC calibration: EC 1.4 (1413 μS/cm)

▸ Power supply: 1 x 9V battery

▸ Water resistance: electrodes IP67 / meter IP62

▸ Dimensions: 210 x 120 x 60 mm

▸ Weight: 430 g