Fig. 4.
Ultrasonic paint removal from the glass beads for under various conditions (Free beads: the glass beads were not attached to the vessel bottom; Attached beads: the beads were attached to it).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.