THE TEMPTIME TTI IS AN "EASY-TO-READ" INDICATOR:

• When the center us lighter than the reference color, the profuct us okay to be used (as long as it is whithin its expiration date).
  
  
• When the center has the same color as the reference color, end point has been reached; the product should not be used.
  
  
• When the center is darker than the than the refernce color, end point has been exceeded; the product should not be used.