The HI-8424N is a dual channel pH/ORP/conductivity benchtop meter from Hanna Instruments. It offers a combination of precision, accuracy and dependability making it suitable for use in a variety of research and development, quality assurance, and other industrial applications. The instrument offers calibration settings for pH, mV and conductivity, and can be set to automatically perform measurements or manually control the settings. The instrument also includes a timer and an LCD display, allowing for readings to be easily read and interpreted. It features two auxiliary inputs, keeping all parameters under control, and comes equipped with two sets of calibration buffers and electrode holders.