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Phosphorus ion(standard sample),4.97mg/L, H2O, 20ml
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Total phosphorus standard solution,8μg/mL, H2O, 50ml
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potassium ion Standard solution,15μg/mL, H2O, 50ml
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potassium ion Standard solution,15μg/mL, H2O, 100ml
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potassium ion Standard solution,20μg/mL, H2O, 100ml
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potassium ion Standard solution,20μg/mL, H2O, 50ml
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potassium ion Standard solution,20μg/mL, H2O, 20ml
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potassium ion Standard solution,5μg/mL, H2O, containing Cl-, 100ml
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potassium ion Standard solution,8μg/mL, H2O, containing Cl-, 100ml
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Cr (Ⅵ) (standard sample),34ug/L,H2O, 20ml
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Cr (Ⅵ) (standard sample),3.81mg/L, H2O, 20ml
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