HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

In stock
SKU: HI98131
Regular price $219.90


GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester (Model HI 98131)

The 3 in 1 GroLine tester features a large multi level LCD which displays both pH, EC or TDS and temperature readings simultaneously.

The pH readings are displayed with a 0.01 resolution and with an accuracy of +/-0.05 pH, while the EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full scale accuracy.

The EC range of the HI98131 is from 0.01 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor.

The HI98131 also offers the option to use a 0.7 (700 ppm) EC to TDS conversion factor.

An exposed temperature sensor allows for rapid temperature compensated measurements of EC and TDS.

The LCD screen has indicators for calibration status and stability.

The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. 

 HI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate.

 Replacement pH Probe


Replacement Batteries Click Here



Hanna HI 98131 Combo Meter Manual

Product Specs

pH Range:  0 - 14 pH

pH Resolution:  0.01 pH

pH Accuracy:  +/- 0.01 pH

Conductivity Range:  0.00 - 6.00mS/cm

Conductivity Resolution:  0.01mS/cm

Conductivity Accuracy:  +/- 2.0% F.S

TDS Range:  0 - 3,000 ppm(500 scale), 0 - 3,999ppm (700 scale)

TDS Resolution:  10 ppm (Mg/L)

TDS Accuracy:  + - 2.0%F.S

Temperature Range:  0.0 - 60.0°C / 32.0 to 140.0°F

Temperature Resolution:  0.1°C / 0.1°F

Temperature Accuracy:  + -0.5°C /+ - 1°F

Auto Off:  After 8 minutes, 60 minutes, disabled

Environment:  0 to 50°C (32 to 122°F); RH max 100%

Dimensions:  6.4" Length X 1.6'" Width X 1.0" Height

Weight:  3.4 oz.

Customer Reviews

Based on 1 review
Quick and Precise Measurement

I avoided getting a ph/tds meter for the longest time. This little device is a great little tool to ensure you are giving your plants exactly what they need to grow optimally.