Malvern Panalytical’s Quality Audit Standards (QAS) for the Mastersizer 3000 have been produced to provide users of Malvern Panalytical laser diffraction particle size analysers with a single-shot, polydisperse transfer standard that enables them to check the performance of their systems on a regular basis. The downloadable file contains specification sheets for all QASs that are used with the Mastersizer 3000 family.