The Crease and Stiffness Tester is manufactured to assess the crease stiffness and board stiffness of carton board. It is used on paper and carton board, manufactured with relevance to BS 6965 and BS 3748 standards.

Crease recovery is determined by the decrease in resistance offered by creased board after it is folded 90° at the crease measuring the recovery force.  Board stiffness is determined by bending a length of board through a 15° angle.