Glass Vials with Cork Stoppers - Lab Sample Containers #304437 (License: Personal Use)

These transparent cylindrical glass vials feature tightly fitted cork stoppers and contain trace amounts of dark granular material, suggesting use for chemical, botanical, or archival sampling. The hand-drawn illustration emphasizes fine vertical striations and realistic shading, evoking early 20th-century scientific illustration style. Each vial is uniformly sized and spaced, reinforcing their role as standardized containers.

Commonly used in educational science pages, historical pharmacy content, DIY herbalism guides, or museum exhibit descriptions; matches user intent for visual reference of antique lab equipment or packaging inspiration.