This standard specifies a test method for determining the surface strength of paper and paperboard using specialized wax sticks. The principle involves contacting the heated and melted wax stick with the surface of the sample. After the wax stick cools and solidifies, it is vertically pulled away, relying on adhesion to cause damage to the sample surface (such as fuzzing or powdering). The maximum wax stick grade that does not damage the paper surface is used as the critical strength grade to evaluate surface strength. This method is simple to operate, suitable for rapid screening of coated and uncoated papers, and particularly effective for detecting low surface strength papers. The core tools used in actual testing include standard specialized wax sticks made from non-grease hard resins (with grades ranging from 4A to 12A), an alcohol lamp (for heating the wax sticks), a wooden board with specific apertures, and a non-conductive work surface to complete the test.