This document is an instruction manual for the HI 96716C Bromine ISM 2 Ion Selective Meter produced by Hanna Instruments Inc. The instrument has high precision and accuracy and is suitable for measuring bromine concentration. It employs an advanced operating principle and has multiple functions and features for calibration, validation, and measurement operations. Additionally, it has a good battery management system and replaceable battery design, and is equipped with various accessories. The document also includes general descriptions, abbreviations, specifications, errors and warnings, startup, measurement procedure, calibration procedure, GLP operation, warranty, and other information about the instrument.