corrigendum tender for es53-012-00837 , es53-012-00838 , es53-012-00839 , es53- 012-00840 , es53-012-00841 , es53-012-00842 , es53-012- 00722 , es53-012-00843 , es53-012-00844 , es53-012- 00845 , es53-012-00846 , es53-012-00847 , es53-012- 00848 , es53-012-00849 , es53-012-00721 , es53-012- 00850 , es53-012-00851 , cs47-101-01066 , es53-012- 00720 , es53-012-00852 , es53-012-00853 , es53-012- 00854 , es53-012-00855 , es53-012-00856 , es53-012- 00857 , es53-012-00858 , es53-012-00859 , es53-012- 00860 , es53-012-00861 , es53-012-00862 , es53-012- 00863 , es53-012-00864 , es53-012-00865 , es53-012- 00866 , es53-012-00867 , es53-012-00868 , es53-012- 00869 , es53-012-00870 , es53-012-00871 , es53-012- 00872 , es53-012-00873 , es53-012-00874 , es53-012- 00875 , es53-012-00876 , es53-012-00877 , es53-012- 00879, procurement of certified reference materials for oes, description 1 as per annexure-i, description 2 as per annexure-i, description 3 as per annexure-i, description 4 as per annexure-i, description 5 as per annexure-i, description 6 as per annexure-i, description 7 as per annexure-i, description 8 as per annexure-i, description 9 as per annexure-i, description 10 as per annexure-i, description 11 as per annexure-i, description 12 as per annexure-i, description 13 as per annexure-i, description 14 as per annexure-i, description 15 as per annexure-i, description 16 as per annexure-i, description 17 as per annexure-i, description 18 as per annexure-i, description 19 as per annexure-i, description 20 as per annexure-i, description 21 as per annexure-i, description 22 as per annexure-i, description 23 as per annexure-i, description 24 as per annexure-i, description 25 as per annexure-i, description 26 as per annexure-i, description 27 as per annexure-i, description 28 as per annexure-i, description 29 as per annexure-i, description 30 as per annexure-i, description 31 as per annexure-i, description 32 as per annexure-i, description 33 as per annexure-i, description 34 as per annexure-i, description 35 as per annexure-i, description 36 as per annexure-i, description 37 as per annexure-i, description 38 as per annexure-i, description 39 as per annexure-i, description 40 as per annexure-i, description 41 as per annexure-i, description 42 as per annexure-i, description 43 as per annexure-i, description 44 as per annexure-i, description 45 as per annexure-i, description 46 as per annexure-i