مواد اولیه شیمیایی آزمایشگاهی ®SIGMA-ALDRICH

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  Nitric acid 65% MERCK

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  ortho-Phosphoric acid 85% MERCK

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  Paraffin MERCK

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  Potassium hydroxide MERCK

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  Potassium iodide MERCK

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  Propylene carbonate MERCK

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  Silver nitrate MERCK

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  Sodium benzoate EMPROVE® MERCK

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