GroLine Monitor for Hydroponic Nutrients (HI981420)

★★★★★ 4.7 79 reviews

US$161.00
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by westerndieselparts.ca
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$161.00
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Sep 26
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by westerndieselparts.ca
Free 30-day returns Details

Product details

Management number 250467321 Release Date 2026/09/17 List Price US$161.00 Model Number 250467321
Category

HI981420 Hydroponics Monitor

The HI981420 GroLine Monitor for Hydroponic Nutrients provides around-the-clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. Quick to setup, simple to use, this monitor was designed with Hydroponics, Aquaponics, and Greenhouses in mind. Make your nutrient solution easy to manage with the GroLine Monitor.

  • Get 24/7 pH&EC measurements for consistent yields every time.
  • Good Laboratory Practice (GLP) feature for professional accuracy.
  • Calibrate pH and EC with a single Quick Cal solution.


One quick glance is all it takes

A large clear LCD displays all of your essential readings so you know what your hydroponic nutrients solution is doing 24/7. High and low alarms flash warning you if something needs adjusting.

 

Monitor changes over time

The GroLine Monitor automatically logs your results every 15 minutes over the last 30 days. Minimum, maximum, and average values are stored so you can recognize when patterns arise and help prevent future problems.

 

One probe. Three measurements.

The 3-in-1 pre-amplified probe measures pH, EC/TDS, and temperature in a single, durable, polypropylene body making the GroLine Monitor easy to handle and easy to set up.

 

Quick Cal for less maintenance

A single calibration solution for pH and conductivity makes calibration fast and ensures all of your measurements are accurate all of the time for better plant health and better yield.

 

Professional level accuracy

Advanced algorithms and greater pH and TDS/ppm accuracy ensure operational consistency and a finer understanding of your plant’s nutritional needs.

 

Measure like a pro

The GroLine Monitor is made by growers and scientists alike who are committed to helping you take your growing operation to the next level.

 

Features

  • 3 sensors combined in a single rugged probe body: pH electrode with renewable cloth junction, amperometric EC/TDS sensor, and an internal temperature sensor for temperature compensated readings

  • IP65 rated enclosure: designed to withstand harsh grow environments

  • Wide pH Range: measure pH from 0.00 to 14.00 pH

  • Selectable EC to TDS/ppm conversion factor: choice of either a 0.5 or 0.7 conversion factor
  • Automatic Temperature Compensation: all readings are compensated for variations in temperature, the temperature displayed in oC or oF along with pH, EC or TDS reading

  • Large LCD with plant-friendly green backlighting: LCD can display all three essential hydroponic nutrient measurements at one time, a 3-second cycle of single measurements, or a real-time graph screen with options for measurement selection and log recall
  • Data logging for 30 days: logs every 15 minutes for last 30 days, stores min, max, and average values

  • Data transfer: USB-C port for easy data transfer to memory stick or PC

  • High and low alarms: warns when your nutrient solution is out of desired range by flashing display and message

  • Ambient light sensor: for automatic LCD dimming

 

Additional Info

  • Manual
 
 

Specs

pH Range: 
  • 0.00 to 14.00 pH;
  • 0.0 to 14.0 pH
EC Range: 0.00 to 10.00 mS/cm
TDS Range:
  • 0 to 5000 ppm (500 CF)
  • 0 to 7000 ppm (700 CF)

TDS Resolution:

  • 10 ppm

Temperature:

  • 0.0 to 60.0°C/
  • 32.0 to 140.0°F
Automatic Calibration: Yes
Quick Cal Compatible*: Yes
Automatic Temperature Compensation (ATC): Yes
Waterproof: IP65
Backlit LCD w/Auto-dimming: Yes
Extendable pH Cloth Junction: Yes
Probe: HI1285-8
Data Logging/Data Export: Yes
HOLD Function: No
Auto Shut-Off: No
Replaceable Electrode: Yes (DIN)
Stability Indicator: No
Connectivity: USB Type-C
Power Supply: 12VDC adapter (included)
Ordering Info: HI981420 is supplied with: HI1285-8 multiparameter probe, HI50036-0 Quick Cal buffer solution sachet (2), HI700661P Electrode cleaning solution sachets for agriculture (2), 12VDC adapter, instruction manual, Monitor Quality Certificate, & Probe Quality Certificate.
Dimensions: 4.92 x 7.28 x 1.49”
Weight: 11.70z

      Correction of product information

      If you notice any omissions or errors in the product information on this page, please use the correction request form below.

      Correction Request Form

      Customer ratings & reviews

      4.7 out of 5
      ★★★★★
      79 ratings | 32 reviews
      How item rating is calculated
      View all reviews
      5 stars
      86% (68)
      4 stars
      2% (2)
      3 stars
      1% (1)
      2 stars
      1% (1)
      1 star
      10% (8)
      Sort by

      There are currently no written reviews for this product.