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硫酸 96% for the determination of viscosity acc. to DIN EN ISO 307
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硫酸 96% for the determination of viscosity acc. to DIN EN ISO 307
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硝酸铵溶液 1 mol/l acc. to DIN 19730
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三磷酸五钠 for BOD determination acc. to DIN 38409-H-51
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三磷酸五钠 for BOD determination acc. to DIN 38409-H-51
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4-氯酚 for AOX determination acc. to DIN 38409-H 14
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高效薄层层析板 25 Glass plates 20 x 10 cm for PAH determination acc. to DIN 38409-H13
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Dynalon High-density polyethylene Buchner funnel, 55 mm dia
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硫酸硫酸银溶液 in sulfuric acid (D=1.84 g/ml) for COD determination acc. to DIN 38409-H 43-1
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硫酸硫酸汞溶液 in diluted sulfuric acid for determination of COD acc. to DIN 38409-H 43-1 (short-term experience)
Mercury(II) sulfate solution 200 g/l in diluted sulfuric acid for determination of COD acc. to DIN
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