The samples used in of this research was blood pressure electronic used in hospitals 48 hospitals southern define brands are the most used 4 brands 7 models of 453 machines. Sampling was conducted to compare with standard tools 384 machines, and select a specific sample each brand and model 30 machines to compare between machines. The implementation of standard procedure of Initial & periodic verifi cation for Non-invasive sphygmomanometers. Department of Medical Sciences. The Ministry of Public Health.