Aqua Master H600 Pro Substrate Meter - pH & EC Tester for Coco & Soil

Test pH and EC Right in the Root Zone with the Aqua Master H600 Pro Substrate Meter

What's in your watering can isn't always what's around the roots. The Aqua Master H600 Pro Substrate Meter pushes spike probes straight into soft, moist media to read pH, EC, PPM, TDS and temperature where it matters, accurate to ±0.1 pH. It's built for coco, compost, potting mix and grow bags, and it reads liquids too.

Why You Need It

Salts build up in media between feeds and pH drifts as plants feed, so a perfect mix going in can turn into something quite different at the roots. Run-off testing gives you a clue. A probe in the media gives you the answer.

Both spike probes plug in separately, the pH probe on a BNC connector (a twist-lock plug) and the EC probe on a small pin, so when one wears out you only replace that one.

Is the H600 Pro Substrate Right for Your Setup?

• Hand watering in coco or soil: check the root zone directly instead of guessing from the can.
• Firm or compacted soil: it still works, but make a pilot hole first so you don't stress the glass tip.
• Mostly testing reservoirs? The standard H600 Pro Handheld Meter comes with liquid probes instead.

How the H600 Pro Substrate Works

The pH probe has a glass tip in a tough plastic body, and the EC probe is stainless steel. Push them into moist media and the meter reads both, with ATC (automatic temperature compensation) correcting from 0 to 50°C. pH calibrates automatically at 4.0 and 7.0, EC at 1.413 mS/cm, and a reminder appears after 30 days.

Key Benefits

• Root zone readings: test the media itself, not just what goes in or runs out.
• Stainless steel EC spike: built to be pushed into media, day after day.
• Separate probes: swap the one that wears out and keep the other.
• Five readings: pH, EC, PPM, TDS and temperature from one meter.
• Works in liquids too: check your feed before it goes on, then the media after.
• HOLD button and carry case: freeze a reading and keep the kit protected between tests.

Contains

• 1 x H600 Pro handheld meter
• 1 x pH substrate probe with BNC connector
• 1 x EC substrate probe with small pin connector
• 1 x Carry case and 9V battery

Not included: calibration solutions and KCl storage solution.

H600 Pro Substrate Specifications

pH	0.1 to 14.0 pH, ±0.1 pH
EC	0.0 to 19.9 mS/cm, ±2% of full scale
TDS	0 to 19.99 ppt
PPM	0 to 1,999 (700 scale)
Temperature	0 to 50°C, ±0.5°C
Calibration	pH automatic 2-point (4.0 and 7.0), EC automatic 1-point (1.413 mS/cm)
Probes	pH glass tip in plastic body, EC stainless steel
Waterproof rating	Probes IP67, meter IP62 (splash resistant)
Power	1 x 9V battery, included
Size and weight	210 x 120 x 60mm, 430g
Warranty	1 year meter, 6 months probes

How To Use the H600 Pro Substrate

1. Soak the pH probe: before first use, stand it in tap water for at least 12 hours.
2. Calibrate: pH in 7.0 then 4.0 buffer, EC in 1.413 solution.
3. Test moist media: push both probes into the media near the roots. In firm soil, make a pilot hole first.
4. Read and hold: let the numbers settle, then press HOLD to note them.
5. Clean and store: wipe off the media, rinse, and store the pH probe with a few drops of KCl storage solution in its cap.

Top tip: Test the same pots in the same spot each time. Media readings vary across a pot, so consistency gives you a trend you can trust rather than numbers that jump around.

FAQs

Can I test dry media?
No. The probes need soft, moist media to get a reading, so test after watering, not when the pot is bone dry.

Can I use liquid probes with this meter?
Yes. It takes Aqua Master's standard pH and EC probes too, so one meter can cover media and reservoir. See our Aqua Master replacement probes.

Is the meter waterproof?
The probes are IP67. The meter body is IP62, so it's splash resistant only.

Need help choosing? Call our growing experts on 01782 749955 or visit One Stop Grow Shop Stoke at Fenton Trade Park.

Stop guessing what's going on at the roots. Browse our full range of pH and EC meters.