Pitfalls in Use of a Dose Calibrator
Type of use | Pitfall |
Routine | Source not centered in dipper |
Contamination of dipper or liner | |
Incorrect isotope button selected | |
Extraneous source affecting reading | |
High voltage not as needed for correct operation | |
Negative reading due to rezeroing when contamination is present | |
Not enough time allowed for reading of low-activity source | |
QC | Required QC testing not performed in regulatory time frames |
Inconsistent geometry for QC testing | |
Incorrect correction factors (linearity testing) | |
Incorrect source information (constancy, accuracy testing) |