Hanna Instruments-98121 Pocket pH and ORP (Redox) Tester
Designed for use out in the field in murky conditions and for swimming pools and spas, the meters are sealed against humidity, float in water and have a bright green casing making them easily visible in low light levels.
Offering users a choice of ORP/Redox and pH measurement combinations, this tester is a popular option for operators carrying out spot checks or testing on location.
Designed for use out in the field in murky conditions and swimming pools and spas, the meter is sealed against humidity, floats in water and has a bright green casing making it easily visible in low light levels.
Key features
- Dual level LCD screen that displays simultaneous readings
- Automatic temperature compensation
- Automatic calibration
- HOLD function freezes readings for ease of recording
- Floating water resistant casing helps prevent accidental loss of meter during testing in difficult conditions
- Battery % level at start up and stability indicator helps ensure tester is in optimum working order
- Cartridge electrode - exclusive to Hanna
- Electrode replacement with stainless steel round connector means there are no pins to bend or break during replacement
- Exposed stainless steel temperature sensor facilitates faster and more accurate temperature measurement
- Combination pH and Redox / ORP electrode
Supplied with
- Hanna Instruments-73127 pH electrode
- Hanna Instruments-73128 electrode removal tool
- Batteries & instructions
Spare electrodes
Easy to replace electrode cartridges with sturdy snap-in connections
- Hanna Instruments-73127 pH electrode
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.