IEEE N42.13-2004

N42.13-2004 is an American National Standard focused on the calibration and usage of dose calibrator ionization chambers for assaying radionuclides. It addresses the practical measurement needs behind radioactive material handling, where instrument response must be understood and controlled to support reliable activity readings. For laboratories and facilities that depend on dose calibrators, this technical document helps clarify how the equipment should be calibrated and applied so results remain consistent, traceable, and fit for routine radiopharmaceutical work.

About N42.13-2004

This standard provides guidance for the calibration and use of dose calibrator ionization chambers, which are commonly used to measure radionuclide activity in clinical and laboratory settings. N42.13-2004 is relevant to the technical practice of assay measurement rather than to general electrical design, and it helps define how the instrument should be checked and used for dependable readings. Its purpose is to support consistent measurement behavior when handling different radionuclides, container types, and operating conditions.

Where is N42.13-2004 used?

N42.13-2004 is typically used in radiopharmacy, nuclear medicine, and other controlled environments where radionuclide assays must be performed with dose calibrator ionization chambers. It is also useful in quality control workflows, instrument verification routines, and procurement decisions for measurement systems used with radioactive sources. The standard is relevant wherever activity measurements support preparation, dispensing, documentation, or verification of radionuclide materials in day-to-day operations.

Importance in practice

In practice, this standard helps reduce measurement uncertainty and supports more dependable assay results. Proper calibration and usage guidance are important for compliance, patient safety, and internal quality control, especially when measured activity affects preparation or administration decisions. N42.13-2004 can also aid in comparing instruments, defining acceptance checks, and limiting avoidable errors caused by chamber response, geometry effects, or inconsistent operating methods. For organizations that rely on dose calibrators, it supports more controlled and defensible measurement practices.

• Calibration of dose calibrator ionization chambers
• Assay of radionuclides
• Measurement consistency and verification
• Controlled use in radiopharmacy and nuclear medicine