Standard JJF 1811-2020 specifies the specification for calibrating paper bursting resistance testers and Cardboard bursting resistance testers. This specification applies to the calibrating of these instruments, and may also refer to the calibrating of bursting resistance testers that perform Miscellaneous low-strength sheet materials. The standard refers to relevant documents such as JJG 52-2013, JJG 875, GB/T 454-2002, GB/T 1539-2007, GB/T 4687-2007 and QB/T 1057-2004 to ensure the accuracy and Reliability of the calibrating process. The terminology section defines the concept and Measurement unit of bursting resistance, such as bursting resistance, bursting resistance testers and clamping systems, etc. The bursting resistance meter consists of a pressure measurement system, a clamping system and a hydraulic system. By applying pressure, the film bursts the paper sample, and the bursting resistance value is determined according to the maximum hydraulic pressure applied. These instruments play an important role in the production of paper and Cardboard, ensuring that the mass of the product meets the standard requirements.