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氨氮标准溶液,1000μg/ml in Water (20℃)
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总氮标准溶液,analytical standard,1000μg/ml in water
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氯离子(Cl-)标准溶液,500μg/ml in Water (20℃)
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氯离子(Cl-)标准溶液,1000μg/ml in Water (20℃)
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石油类标准溶液(红外法),30.5μg/ml in Carbon tetrachloride
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乙基汞标准溶液,analytical standard,10ug/ml in Toluene
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水硬度标准溶液,45.0mmol/l(以CaCO3计),in 0.1mol/L HCl
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总硬度标准溶液,1000μg/ml,总硬度
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镨标准溶液,7440-10-0,1000ug/ml in 10%HCl
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水中铵离子成分分析标准物质,1000μg/ml ±1% (20℃)
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