... 381-0 4) Mg/l00ml phrlt 6xi h6a l) TC\'lr Mc&c TC\'II Loai I t,5 6778 - 2006 (ASTM D 525-0 5) 1425 3172 - 2008 (ASTM D 4294-0 6) 198 2006 (ASTM D 323-99a) 6l %Tt TCVN 3166 - 2008 (ASTM D 5580-0 2) I.l ... (ASTM D 3831_0 1) 10 t72 - 2008 (ASTM D 4294_0 6) 220 2006 (ASTM D 323-99a) 60 t66 - 2008 (ASTM D 5580-0 2) 1.3 - 7330 - 2007 (ASTM D t3l9-O3el ) - 2007 (ASTM Hd nQi, ngdy PHU D 1298-0 5) : - Kih qud ... 2007 (ASTM D t298-0 5) t5 Hdm luong kim lo?i ( Fe, Mn) Me/l TCVN 7331 - 2003 (ASTM D 383 r-0 1) t2 Mg/100m1 TC\,N 65S3 - 2006 ) (ASTM D 38 t-0 4) TCVN 6778 - 2006 (ASTM D 525-0 5) 1009 Mgkc TCVN 3172...