The ASTM D3815/D3815M-05 (2019) standard practice provides a method for accelerating the efflooming of pressure-sensitive tapes under laboratory conditions. The practice simulates the efflooming environment through an open-fire carbon arc device, but is not directly equivalent to natural efflorescence. The test involves sample prepative and exposure to an accelerated weathering environment, but does not specify a specific exposure time or follow-up test requirements. Before using the results of this practice, it is necessary to confirm its correlation with natural efflorescence to avoid inaccuracy of the results. The standard provides a reference for laboratories to evaluate tape weathering resistance, but a comprehensive judgment needs to be made in combination with actual environmental conditions.