Standard Test Piece (STP) is designed to enable an operator to establish whether the x-ray machine is in compliance with current regulations and there has not been obvious changes that might affect its performance to detect and display different densities of materials.
It is recommended to use STP regularly to ensure that equipment is working properly and complying according to legal requirements.
AWG-STP) Standard Test Piece AWG-format for international use
AWG-ESTP) Enhanced Standard Test Piece AWG for single wire resolution and usefull penetration with simple penetration from 18 up to 34mm
MM-STP) Standard Test Piece in millimeters to comply with EU-regulations
MM-ESTP Enhanced Standard Test Piece in millimeters for single wire resolution and usefull penetration with simple penetration from 18 up to 34mm
Also supporting document may be obtained to support various regions.