The HI921 Autosampler is an automated titration sample handling system designed for use with the HI902C Automatic Titration System. This high quality system makes the titration of multiple samples quick and easy. The HI921 Autosampler interfaces directly with the HI902C to access titration methods, allowing up to 18 samples to be run consecutively.The HI921 can utilize up to three peristaltic pumps for reagent addition, sample leveling, and waste aspiration. An included control panel allows for manual operation of the motors and pumps. The Autosampler also features a built-in magnetic stirrer or optional overhead stirrer, status indicator lights, USB interface with compatible barcode reader, and built-in RFID for each tray.