The HI96704 Hydrazine Photometer combines accuracy and ease of use in an ergonomic, portable design. Using the HI93704-0 ready-made reagents a user can accurately determine the concentration of hydrazine within a 0 to 400 µg/L (ppb) range. The HI96704 offers many advanced features including the exclusive CAL Check™ function used for performance verification and calibration of the meter.