Ectoplasmic Ichor

When this thick, translucent paste is spread onto a corporeal object (requiring a standard action), it allows incorporeal creatures to interact with that object as if they were corporeal (much like a ghost touch weapon). A single vial coats one Medium or smaller weapon, shield, or suit of armor, or any other object of similar size. The effect lasts for 1 hour.

Prerequisites: Craft Wondrous Item, ghost touch weapon.

Cost to Create: 250 gp, 20 XP, 1 day.

Source: Libris Mortis, page 78. Changed the Prerequisites entry to show ghost touch weapon spell instead of just ghost touch.