Hanna Instruments-981420 Groline Monitor
Hanna Instruments-981420 GroLine monitor
Make your nutrient solution easy to manage with the GroLine Monitor and combined pH/EC/Temperature probe. Quick to setup and simple to use, the monitor was designed for hydroponics, aquaponics, and greenhouses.
Benefits include:
- High and low alarms with LED indicator
- Easy viewing on the large LCD with plant-safe green backlighting
- Calibrate pH and EC with a single Quick Cal solution
Giving growers the green light!
The revolutionary Hanna Instruments-981420 GroLine monitor emits just the right amount of green light from its screen so not to disturb the seedlings' natural growing cycles.
The benefits of having a gentle green glow:
- Works alongside favoured red and blue lighting systems
- Does not disturb the plants' 'night sleep' cycle
- Natural growth regulator
- Can repress the growth of algae and fungus
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.