摘要 |
A composition is provided which comprises an acidic component, generally fulvic acid, having a molecular weight not exceeding 20,000 Daltons and a low content of the elements aluminium, mercury, cadmium, chromium and lead. The acidic component is preferably carbohydrate derived and preferably using a wet oxidation process. |
申请人 |
PFEINSMITH S.A. (PTY) LTD;LOXTON, EARLE JOHN;MALAN, RUDOLPH JOHANNES;COETZEE, STEFAN |
发明人 |
LOXTON, EARLE JOHN;MALAN, RUDOLPH JOHANNES;COETZEE, STEFAN |