6.2 EQAS  Sample Number and Composition  6.2.1  Number of EQAS  Samples  The actual composition and number of EQAS  samples supplied to different Laboratories  may vary; however, within any calendar year, all Laboratories     ISL – January 2021 Page 121 of 160 participating in the EQAS  are expected to have analyzed the minimum total number of EQAS  samples.