Invisible Yellow Chalk

Item Code: 198-203
Final Price: $5.50
Weight: 2.00 OZ
Stock: Yes
Category Invisible Black Light Chalk
Description:

Appears white under ordinary light and changes to Yellow under black light. Color shown is approximate. Perfect for those ultra-cool dual image chalk drawings. Works great on wood, paper masonary, asphalt and a host of other surfaces (not recommended for black boards). Stick measures 1"x1"x3"


Appears white under ordinary light and changes to Yellow under black light. Color shown is approximate. Perfect for those ultra-cool dual image chalk drawings. Works great on wood, paper masonary, asphalt and a host of other surfaces (not recommended for black boards). Stick measures 1"x1"x3"

This chalk product is designed to react to a true 365nm black light source it will not react to longer wavelengths such as 385nm, 390nm or 400nm.