The ASIAN Bursting StrengthTester is designed to find bursting strength of fabric leather paper paperboard & corrugated box. A test specimen is held between two annular clampsunder sufficient pressure to minimize slippage. The clamping is done by handwheel screw arrangement or by pneumatic pressure with pressure gauge, solenoidvalve and pressure regulator as per model. The upper clamping surface which isin contact with the test specimens has a continuous spiral grooves. A circulardiaphragm of pure gum rubber is clamped between the lower clamping plate &pressure cylinder so that before the diaphragm is stretched by pressureunderneath it the center of its upper surface is below the plane of theclamping surface.