Chapter 12 “Quality Assurance” of the European Standard EN 14042 – “Workplace atmosphere – Guide for the application and use of procedures for the assessment of exposure to chemical and biological agents”.
“It is good practice to set up a Quality Assurance scheme for the maintenance and calibration of the samplers. This includes:
a) the establishment of a Standard Operating Procedure (SOP);
b) for re-usable device, a log of usage;
c) keeping a record of the traceability of the calibration;
d) retaining the raw data as required by the quality or other system;
e) using a unique and durable sampler numbering system for the re-usable devices;
f) depending on the measurement task, taking an appropriate number of field blank and replicate samples (e.g.: 10%);
g) an appropriate level of internal and external Quality Assurance”.