Classic Lab Filtration Setup - Hand-Poured Liquid Through Funnel into Wooden Bucket #100377 (License: Personal Use)

This black-and-white line illustration shows two hands performing a manual liquid transfer: one holds a round-bottom flask倾倒 (pouring), while the other steadies a funnel inserted into a cylindrical wooden bucket partially filled with liquid. The scene evokes historical laboratory practices, possibly representing early distillation, filtration, or solvent recovery methods before modern glassware standardization.

Used in educational content about chemistry history, basic lab techniques, or vintage scientific apparatus; matches user intent for visual aids in STEM teaching materials, museum exhibits, or open-source science illustrations.