Burette with Sodium Thiosulfate Solution - Lab Equipment Illustration #40304 (License: Personal Use)

This image shows a glass burette mounted on a retort stand, filled with a vivid blue aqueous solution of sodium thiosulfate (Na₂S₂O₃), commonly used in iodometric titrations. The close-up inset highlights the graduated scale from 0 to 20 mL, with fine刻度 markings for accurate volume measurement. The stopcock at the base allows controlled dispensing during quantitative analysis.

Used in educational chemistry resources, lab manuals, or online science courses to demonstrate titration setup and volumetric measurement techniques; targets students, teachers, and lab technicians seeking visual reference for standard analytical procedures.