The Portable pH/ORP/ISE and Temperature meter (HI98191) from Hanna Instruments delivers the precision of a benchtop meter in a field-ready design, while fully waterproof to IP67 standards. This professional portable meter measures pH, ORP, ISE, and temperature, making it the go-to choice for water treatment, environmental testing, laboratory work, and industrial applications. Just like the brand’s Portable pH/ORP and Temperature meter and Portable pH meter with FC2023 electrode, the HI98191 features an expanded ISE measurement capability, allowing ion concentration readings to be displayed in your preferred concentration units. Combined with CAL Check calibration diagnostics and ergonomic one-handed operation, it ensures reliable performance with minimal effort in any environment. The meter ships as a complete, ready-to-use kit, including a pH/temperature electrode, temperature probe, calibration and cleaning solutions, beakers, batteries, software, USB cable for PC connectivity, and a durable carrying case.