The Hanna Groline Range at Instrument Choice

The Hanna Groline Range at Instrument Choice

The Groline range by Hanna Instruments is a series of innovative and specialised meters for professional growers that accurately measure pH, temperature, conductivity and total dissolved solids.

This article details Groline products from straightforward entry-level testers to feature-rich meters used on commercial farms, greenhouses, and research facilities.

About Hanna Instruments and the Groline Range

Hanna Instruments have manufactured affordable and precise scientific equipment for over 40 years. Today, Hanna Instruments offers an extensive array of simple-to-operate innovative scientific and environmental monitoring equipment.

Groline designers' goal was to offer testers and portable meters for soil and growing media composition analysis that were affordable, accurate and straightforward to use.

Hanna Instruments Groline Testers

GroLine testers measure pH, conductivity or total dissolved solids (TDS) in nutrient solutions, soil slurries, or direct soil measurements.

GroLine Waterproof EC/TDS (ppm) Tester
Product Code: IC-HI98318

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GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester 
Product Code: IC-HI98131

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The GroLine Waterproof EC/TDS Tester provides a simple, inexpensive solution to measure fertiliser concentration in a nutrient solution.

Top 3 Features:

  • 1.Fast, automatic temperature compensation due to the exposed temperature probe.
  • 2.Selectable conductivity to TDS conversion factors (0.5 and 0.7).
  • 3.Graphite sensors that help reduce polarisation effects.

Quick Specifications:

Measurement Method: Nutrient solutions

Measures: Conductivity, TDS, Temperature

Conductivity Range:0.00 to 6.00 mS/cm

Conductivity Accuracy:±2% F.S.

TDS Range:0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)

TDS Accuracy:±2% F.S.

Temperature Range: 0.0 to 50.0°C

Temperature Accuracy:±0.5°C

Applications:

The IC-HI98318 is designed explicitly for measuring EC/TDS in hydroponic nutrient solutions.

The HI98131 is a slim, lightweight, and waterproof pocket-sized meter that simultaneously measures and displays both pH, conductivity, or TDS and temperature readings.

Top 3 Features:

  • 1.Three sensors in a single meter - pH, conductivity and TDS.
  • 2.A stability indicator disappears when the reading is stable.
  • 3.A measurement hold function that freezes the reading to allow the recording of results.

Quick Specifications:

Measurement Method: Nutrient solutions and soil slurries

Measures: pH, Conductivity, TDS, Temperature

pH Range:0.00 to 14.00 pH

pH Accuracy:±0.1 pH

Conductivity Range: 0.00 to 6.00 mS/cm

Conductivity Accuracy:±2% F.S

TDS Range: 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)

TDS Accuracy:±2% F.S.

Temperature Range: 0.0 to 60.0°C

Temperature Accuracy: 0.5°C

Applications:

The IC-HI98131 is a versatile pocket meter designed for hydroponics, home and commercial greenhouses, plus various farm and agricultural applications.

GroLine Soil pH Tester 
Product Code: IC-HI981030

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Direct Soil EC/temp Tester 
Product Code: IC-HI98331

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The IC-HI981030 is an application-specific soil pH tester. The meter offers many advanced, soil pH monitoring specific features including the ability to clear any clogging of the reference junction (a common issue when working with soils) for extended working life.

Top 3 Features:

  • 1.The conical-shaped tip design for soil and soil slurry penetration.
  • 2.Included CR2032 Li-ion battery provides up to 1000 hours of continuous use.
  • 3.Unique open junction with removable sleeve. When the readings become slow, remove the sleeve for quick cleaning and electrolyte refreshment. This action will improve performance and extend the life of the tester.

Quick Specifications:

Measurement Method: Direct soil and soil slurries

Measures: pH

Range: 0 to 14.0 pH

Accuracy:±0.2 pH at 25°C

Applications:

With the ability to measure both soil slurries and take direct measurements, the budget-friendly IC-HI981030 is perfectly suited for use in greenhouses, educational facilities and farms.

The Soil Test Direct Soil EC Tester is a rugged, reliable pocket-sized soil conductivity tester that offers quick and accurate readings through single button operation, with a 114mm stainless steel penetration probe for direct soil measurement.

Top 3 Features:

  • 1.One-point calibration: Automatic calibration to 1413 uS/cm conductivity standard.
  • 2.Automatic Temperature Compensation (ATC): Samples automatically compensated for temperature variations using a fixed 2%/°C. temperature correction coefficient
  • 3.Stainless steel penetration electrode for direct soil measurement.

Quick Specifications:

Measurement Method: Direct soil and soil slurries

Measures: Conductivity, Temperature

Conductivity Range:0 to 4000 uS/cm; 0.00 to 4.00 mS/cm

Conductivity Accuracy:±50 uS/cm (0 to 2000 uS/cm), ± 300 uS/cm (2000 to 4000 uS/cm); ± 0.05 mS/cm (0.00 to 2.00 mS/cm), ±0.30 mS/cm (2.00 to 4.00 mS/cm)

Temperature Range: 0.0 to 50.0°C

Temperature Accuracy:1°C

Applications:

Home and professional hydroponic setups, farms and greenhouses.

Hanna Instruments Groline Portable Meters 

GroLine portable meters feature cabled electrodes and robust meter bodies designed to fit comfortably in your hand for on the go testing. The Groline portable product offering includes a single-parameter and a multiparameter meter explicitly designed for the professional grower or researcher.

GroLine Waterproof Portable pH/EC/TDS Meter 
Product Code: IC-HI9814

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GroLine Professional Portable Soil pH Meter 
Product Code: IC-HI98168

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The feature-rich IC-HI9814 Portable GroLine Meter the go-to meter for professional hydroponic growers. The specialised electrode combines three sensors in a single probe housed in a robust polypropylene body.

Top 3 Features:

  • 1.Designed to withstand the knocks, drops, and spills of real life, the IP67 rated body ensures top performance in any environment.
  • 2.An on-screen indicator provides visual confirmation that your probe is working at its best.
  • 3.A quick-connect DIN connector makes attaching and removing the probe simple and easy. The rubber coating protects the cable and provides a water-tight seal without the need for twisting.

Quick Specifications:

Measurement Method: Direct soil and soil slurries

Measures: pH, Conductivity, TDS and Temperature

pH Range: 0.00 to 14.00 pH

pH Accuracy:±0.01 pH

Conductivity Range: 0.00 to 6.00 mS/cm

Conductivity Accuracy:±2% FS

TDS Range: 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)

TDS Accuracy: ± 2% FS

Temperature Range: 0.0 to 60.0°C

Temperature Accuracy: 0.5°C

Applications:

Rugged and designed for use on the go, this meter is well suited for hydroponic facilities, greenhouses and more.

The IC-HI98168 GroLine Professional Portable Soil pH Meter is engineered to withstand direct insertion in soil and has several features that facilitate accurate data collection.

Top 3 Features:

  • 1.The IC-HI98168 provides easy access to GLP data for increased traceability. Data is accessible using a fixed, dedicated key.
  • 2.Data logging feature with the ability to store up to 100 readings.
  • 3.Uses Hanna Instruments' CAL check' feature which alerts users to potential problems during calibration. Notifications (displayed on LCD) include: when to clean electrode, possible buffer contamination and the current electrode condition.

Quick Specifications:

Measurement Method: Direct soil and soil slurries

Measures: pH and temperature

pH Range: -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH

pH Accuracy: (at 25°C): ± 0.1; ±0.002 pH

Temperature Range: -20.0 to 120.0°C

Temperature Accuracy:±0.4°C

Applications:

Feature-rich and designed for professional use, this pH meter is commonly used for research, farming, agriculture, and education.

Conclusion 

The Hanna Instruments range of Groline meters features both single and multiparameter instruments that measure pH, temperature, conductivity, and total dissolved soils in nutrient solutions and soils with precision. Groline meters are for professional growers or keen home gardeners wanting professional and reliable measurements.

Want more information on any of the products mentioned above? Speak with an Instrument Choice Scientist! We're here to help! Call 1300 737 871 or email [email protected].

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