This waterproof tester offers high accuracy pH, EC/TDS, and temperature measurements all in a single tester! No more switching between meters for your routine measurements. This floating, waterproof combination tester has an easy to read LCD and an automatic shut-off. pH and EC/TDS readings are automatically temperature compensated.

This tester features a replaceable pH electrode cartridge with an extendable cloth junction as well as an EC/TDS graphite electrode. The extendable cloth junction provides an extended electrode life and the replaceable pH cartridge means that this tester does not need to be thrown away when the pH sensor is exhausted.

The EC/TDS conversion factor is user-selectable as well as the temperature compensation coefficient (?).

Fast, efficient, accurate and portable, the combo pH, EC/TDS, and temperature tester combines all the features users have requested and more!

Hannah Combo PH EC PPM Meter

    • Dual-level LCD
    • Replaceable pH electrode cartridge
    • Measures in PPM (parts per million)
    • Waterproof and designed to float
    • Cloth, renewable junction
    • Close proximity temperature probe
    • Automatic temperature compensation
    • Automatic 1 or 2 point pH calibration
    • Tactile grip casings
    • HOLD function
    • BEPS (Battery Error Prevention System)
    • Battery % displayed at startup
    • Automatic shut-off
    • Efficient two button operation
    • Temperature in °C or °F; easily switch between Celsius and Fahrenheit readouts
    • Comes with electrode, electrode removal tool, batteries, and instructions


150 Product ratings

83% would recommend

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not the quietest at all . works great

not the quietest at all . works great

I recommend this product.


11/23/2018, 8:13:41 AM

great customer service

top-notch customer service. great products. I highly recommend drip right products.

I recommend this product.


11/23/2018, 8:13:41 AM

Quite Pleased

System works great. But the customer service provided by this company had me in awe. This is customer service from another dimension. Thanks again, Martin!

I recommend this product.


11/23/2018, 8:13:41 AM

Vacation peace of mind

The HydroLock system works excellent! I went on vacation for 9 days and had no one to look over my plants; they would have died if not for this watering system! I had a webcam hooked up to check on the tent while away, and can report that the HydroLock system worked very reliably.

I had very minimal experience with PVC cement before this, and still found it very easy to set up. I highly recommend buying the Barb Insert Gun from the accessories page. I did not and connecting the hoses to the plastic barbs was the only difficult part of the setup. As a temporary reservoir I used a food grade 5 gallon bucket with a lid that had a hole in the top for PEX tubing to the pump.

Customer service has been great also! I asked a few questions by web chat and by phone, and got the exact info I needed from the owner.

The 10” HydroLock domes just barely fit in my 3 gallon fabric pots; it seems they are designed more for 5 or 8 gallon pots. The owner said they do plan to release smaller domes in the future also. I used this for just 2 plants so far, but the kit supports up to 6 and is expandable to 24 plants using the same pump.

For anyone looking to automate their watering, this is the company to go with! Excellent product and customer service!

I recommend this product.


11/23/2018, 8:13:41 AM

Does what it says

These things have a good spray and seem to reduce how much I need to water. I run organic and haven’t had any issues clogging for over 20 days now. I’m impressed.

I recommend this product.


11/23/2018, 8:13:41 AM

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