CALL: A.WIHARTA 081294124885 085778084789 087784022201   Info Produk The Hanna Instruments HI 2215 pH and ORP Data Logging pH Benchtop Meter is a pH and ORP benchtop meter offering five point calibration. A relative mV feature is also provided, and the Hanna Instruments HI 2215 adds 0.001 pH resolution and interval logging. The Hanna Instruments HI2215 can take measurements using ORP electrodes ( pH channel input) due to their capability to measure mV with a resolution up to 0.1 mV. The Hanna HI 2215 provides GLP capabilities to allow the storage and retrieval of all data regarding pH and relative mV calibration.