Make sure the surfaces to be bonded are clean and dry (preferable to solvent-wipe plastics, glass, and rubber, and to acid-treat metals). Dispense a drop or drops to one surface only. Apply only enough to leave a thin film after compression. Press parts together and hold firmly for a few seconds. Good contact is essential. An adequate bond develops in less than one minute. Wipe off excess adhesive from the top of the container and recap Vetra LV-401 if left uncapped, may deteriorate by contamination from moisture in the air. Because Vetra LV-401 condenses by polymerization, sometimes whitening will occur on the surface of the container.