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灭幼脲标准溶液,57160-47-1,analytical standard,100ug/ml in actone
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锶标准溶液,7440-24-6,100ug/mL in 5%HCl
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石油醚沸点 40-60°C for gas chromatography SupraSolv®
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石油醚沸点 40-60°C for gas chromatography SupraSolv®
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氟离子(F-)标准溶液,16984-48-8,500μg/ml in Water (20℃)
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AEX Ion-exchange resin | MedChemExpress (MCE)
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氨氮标准溶液,1000μg/ml in Water (20℃)
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亚硝酸盐标准溶液(以氮计),100mg/L in water
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砷标准溶液,7440-38-2,analytical standard, 100ug/ml in 1%HNO3
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金属钳合剂 溶液 A for the determination of alkaline earth in water (hardness), 1 ml
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