This standard specifies a general method for determining the tearing resistance of paper and paperboard using the Elmendorf method. The core principle involves releasing a pendulum from a predetermined height, utilizing its stored potential energy to tear a pre-cut specimen with a specified slit length. By measuring the energy consumed during the tearing process, the tearing force required for the specimen is calculated. The test requires the use of a specialized tearing tester (also known as an Elmendorf tearing tester), which is a device that determines tearing strength through a pendulum system and an electronic measurement unit. This method is applicable to low-basis-weight paperboard and corrugating medium within the instrument's measurement range, but not to complete corrugated fiberboard.