InfoSight® Corporation
Extreme Label

This Tag :
A.    Survives Boiling ( pH 14)   cleaning for hours
B.    Survives extended Temperatures of -50 degF  to  400 degF 
C.    Is readable after extensive  abrasion created by particulate flow

The label shown below is 15mm dia and is placed in a 1.6mm deep pocket

Here shown below is the same Label after Alkali cleaning in pH 14 ( 4 hours)  Followed in Acid pH 4  (4 hours)
and sand blasted till it appears "foggy"

Foggy Label

The foggy Label above was then "wet " with appropriate refractive index liquid see result below.

wet label

The Alkali / Acid / Abraded Label  scans well .