The STRUCTURIX CERTIFIED DENSTEP is a density step wedge film to verify the calibration of optical transmission densitometers used in the industrial X-ray field.

Each STRUCTURIX CERTIFIED DENSTEP is:

• Packed in a light-tight waterproof package which protects it against moisture, dust, etc. guaranteeing shelf life of at least four years
• Provided with a calibration certificate and a copy of the NIST certificate S.R.M. 1001