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氨氮标准溶液,500mg/L in H2O
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硝酸盐氮标准溶液,1000ug/ml in Water (20℃)
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苯酚标准溶液,1000ug/ml in 0.02mol/L NaOH
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乙酸正丁酯标准溶液,123-86-4,analytical standard,1000ug/ml,in methanol
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甲醛标准溶液,50-00-0,analytical standard,100mg/L,in 5% ethanol
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铥 ICP 标准液 1,000 mg/l traceable to SRM from NIST Tm(NO₃)₃ in HNO₃ 2-3% 1000 mg/l Tm CertiPUR®
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水中硝酸根成分分析标准物质,1000ug/ml ±1% (20℃)
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水中硫酸根成分分析标准物质,1000μg/ml ±1% (20℃)
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水中硫酸根成分分析标准物质,100μg/ml ±2% (20℃)
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水中硫酸根成分分析标准物质,500μg/ml ±1% (20℃)
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