GroLine: pH, EC and TDS Meters Designed for Agriculture and Hydroponics

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Hanna Instruments GroLine products are designed with the hydroponics grower in mind. Growers can rely on Hanna’s meters and testers for accurate measurements of their nutrients in soil, growing media, or solution to ensure successful crop yields. We design, develop and support our own products ensuring the highest level of quality!

Most GroLine Models provide these benefits

  • Accurate – Professional grade pH/EC/TDS/Temperature electrodes and meters
  • Fast – QuickCal single solution for calibration
  • Waterproof – Withstands humidity and accidental immersions

GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter – HI9814

Application Driven Performance

Hydroponic growers are faced with many difficulties when performing analytical measurements. Humidity, electrical noise from ballast and pumps, and pH calibration to a single point that is also close to the expected value, all can be challenging in obtaining an accurate reading. The GroLine portable pH/EC/TDS meter uses a single probe designed with an amplifier in the pH electrode that helps eliminate electrical noise resulting in a fast and accurate pH measurement. The pH electrode also has a buffered salt solution in the tip of the pH electrode that is at a different value from a standard pH electrode. Using a different pH buffered solution will result in a dramatically different measurement value from pH 7 being displayed in the event there is a hairline crack in the electrode.

Quick Cal Mode

Quick Cal mode allows the user to perform a single point pH and EC/TDS calibration with one solution. Simply enter calibration mode and the meter will prompt to confirm calibration to pH 6.86 and 5.00 mS/cm.

Multiparameter Measuring Modes

GroLine portable meters offer both Conductivity (EC) and Total Dissolved Solids (TDS) measuring modes. The EC measuring mode has an expanded scale to measure up to 6.00 mS/cm while TDS measuring range is up to 3999 ppm using a 0.7 conversion factor.
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Quick Calibration Solution for GroLine pH and EC Meters (25 x 20 mL sachets)

With GroLine Quick Cal solution only one solution is needed to calibrate both pH and conductivity. This dual-purpose calibration solution is used with compatible meters with the Quick Cal mode or with pH and conductivity meters that calibrate to pH 6.86 and 5.00 mS/cm, respectively.

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GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester – HI98131

Replaceable pH electrode with extractable junction

GroLine waterproof pocket pH/EC/TDS meter uses a cartridge design replaceable electrode that does not have any pins to align or that can be broken. Simply insert and turn to lock in place. The replacement pH electrode also has an extractable junction that is used to clear any clogging that occurs with use resulting in erratic and drifting readings.

Quick Cal Mode

Quick Cal mode allows the user to perform a single point pH and EC/TDS calibration with one solution. Simply enter calibration mode and the meter will prompt to confirm calibration to pH 6.86 and 5.00 mS/cm.

Multiparameter Measuring Modes

GroLine portable meters offer both Conductivity (EC) and Total Dissolved Solids (TDS) measuring modes. The EC measuring mode has an expanded scale to measure up to 6.00 mS/cm while TDS measuring range is up to 3999 ppm using a 0.7 conversion factor.

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GroLine Waterproof Hydroponic pH Tester – HI98118

The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydroponic nutrient solution. This modern looking meter is only 0.7″ thick and extremely ergonomic, fitting comfortably in your hand. The HI98118 has a very large easy to read LCD display that shows both pH and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one or two point calibration.

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GroLine Waterproof EC/TDS (ppm) Tester – HI98318

The HI98318 is our latest pocket meter for measuring the EC/TDS of a hydroponic nutrient solution. This modern looking meter is only 0.7″ thick and extremely ergonomic, fitting comfortably in your hand. The HI98318 has a very large easy to read LCD display that shows both EC or TDS and temperature along with calibration, stability and low battery indicators. All operations are simplified to two buttons. One is for turning the meter on/off and the other for automatic one point calibration.

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GroLine Hydroponics pH Tester – HI98115

The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple meter to operate with all functions including turning on/off and calibration are performed with a single button. The HI98115 features a replaceable HI1271 pH electrode that can be changed when needed without having to buy a new meter. The HI98115 is supplied complete with a carrying case and calibration solutions.hi98115-groline-ph-tester
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Soil Test™ Direct Soil EC Tester – HI98331

The Soil Test™ Direct Soil EC Tester – HI98331 is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The Soil Test™ Direct Soil EC Tester – HI98331 features a stainless steel penetration probe for direct measurement of conductivity in soils. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conductivity measurements in soil.

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Watch the HI9814 Hydroponic Meter video:

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Download the Brochure:

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2 thoughts on “GroLine: pH, EC and TDS Meters Designed for Agriculture and Hydroponics

  1. Pingback: The Importance of pH in Soils and Nutrient Solutions for Plant Growth – Hanna Instruments Australia

  2. Pingback: Preparing a Soil Sample for Nutrient Analysis – Hanna Instruments Australia

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