
The ORP pH Temperature Tester HI98121 from Hanna Instruments is a versatile and durable testing tool designed for marine aquarium enthusiasts. This waterproof meter measures pH, ORP (Oxidation-Reduction Potential), and temperature with ease, thanks to its ergonomically designed floating body that ensures it's always within reach during water testing sessions. The tester offers a wide pH range of -2.00 to 16.00, making it suitable for various aquatic environments including saltwater reef tanks where precise measurements are crucial. It comes with four watch batteries and comprehensive instructions, ensuring it is ready to use right out of the box.
| Display | Dual Line LCD |
| Includes | Batteries And Instructions |
| pH Range | -2.00 to 16.00 |
| ORP Accuracy | +/-2 mV |
| Power Source | 4 Watch Batteries |
| Temp. Accuracy | +/-1 Degrees F |
| Manufacturers Warranty Length | 1 Year |
Price History
ORP pH Temperature Tester HI98121
by Hanna Instruments
Test Kits
Reference reading: Species guide on Codexery
Species guides on Codexery
- Yellow tang — Scientific name: Zebrasoma flavescens · Family: Acanthuridae source
- Regal blue tang — Scientific name: Paracanthurus hepatus · Family: Acanthuridae source
1 retailer · 1 in stock
Compare Prices
Prices and availability change; we are not paid by these stores.
Active Deals
10% price drop on ORP/pH/Temperature Tester (HI98121) - Hanna Instruments
Price dropped from $239.99 to $215.99















