Aluminium oxide Activated,neutral ,Brockmann I, 1kg  grade Brockmann I  activated  standard grade  form powder  mfr. No. CAMAG 507-C-I  particle size ~150 mesh  pore size 58 Å pore size  surface area 155 m $^{2}$/g  Ph 7.0±0.5 ( in H$_{2}$O)  mp 2040 °C(lit.)  6  Sodium tetraethylborate, 97% - 1 g  Derivatizing agent used in the GC-MS analyses assay 97%  4  August 2020 EN-c4f_annexiitechspeciiitechoffer_en.docx  EN-c4f_annexiitechspeciiitechoffer_en.docx Page 44 of 76 