Product Overview
Oakton ECTester High+ Handheld EC Meter - 0 to 19.99 mS/cm, Waterproof IP67, Replaceable Electrode, ATC
Condition
Single unit available. Used condition - presents as essentially unused with little visible wear, clean body, and a display that powers on reading 0.00 mS. Functionally tested. Sourced from a government research facility. Storage case included as shown in photos. Photos show the specific unit you will receive.
Carefully packed and shipped same or next business day from our Idaho warehouse. Online since 1999. Honest equipment and straightforward service.
No hassle resolution if there is an issue. Serving customers since 1999.
Product Overview
Oakton ECTester High+ (part number 35661-43) is a waterproof, pen-style conductivity tester covering 0 to 19.99 mS/cm - the high-range variant in Oakton's ECTestr line, suited for nutrient-dense solutions, brackish water, and industrial process fluids where standard-range meters fall short. Cup or dip style readings. The electrode module is replaceable, extending the useful life of the instrument well beyond the electrode's wear cycle. Automatic temperature compensation corrects readings in real time. ON/OFF, MODE, and HOLD buttons are visible and functional. CE marked. ISO 9001 manufactured.
Key Features
- Conductivity range: 0 to 19.99 mS/cm (0 to 19,990 µS/cm)
- Resolution: 0.01 mS/cm
- Accuracy: ±1% full scale
- Automatic temperature compensation (ATC) with °C readout
- Waterproof rating: IP67
- Replaceable electrode module
- Cup or dip style measurement
- ON/OFF, MODE, and HOLD button controls
- CE marked - ISO 9001 manufactured
- Storage case included
Applications
- Hydroponics - monitoring nutrient solution EC before and after reservoir adjustment
- Aquaculture - tracking salinity and dissolved ion concentration in tank water
- Environmental field sampling - stream, runoff, and groundwater conductivity checks
- Agriculture - irrigation water quality and fertilizer solution strength
- Education and laboratory - classroom and bench EC measurement exercises
Frequently Asked Questions
What is the measurement range and is it suitable for saltwater or high-nutrient solutions?
The range is 0 to 19.99 mS/cm (19,990 µS/cm). That covers most hydroponic nutrient solutions, brackish water, and moderately saline samples. Full ocean seawater typically exceeds this range.
Is the electrode module in good condition?
The unit presents as essentially unused with no visible wear on the electrode tip or body. The electrode is a replaceable module, so even if wear develops over time, it can be swapped without replacing the full instrument.
What is included?
The tester and its storage case are included, as shown in the photos. Batteries included.
Does it compensate for temperature automatically?
Yes. Automatic temperature compensation (ATC) is built in and the unit also displays temperature in °C via the MODE button.
Is this a standalone device or does it require software or a controller?
Fully standalone. No software, network connection, or external controller required. Dip or cup the tip in the sample and read the display directly.
This one came out of a government lab where someone apparently bought the right meter and then never really needed it - which is your good luck. High-range EC, IP67 waterproofing, and a replaceable electrode in a pen you can slip in a shirt pocket. The next chapter is yours to write.
