формальдегид水质标样

Formaldehyde standard for water analysis 0.43μg/mL in H2O，1.41μg/mL in H2O，0.317μg/mL in H2O，0.05μg/mL in H2O，0.409μg/mL in H2O，0.5μg/mL in H2O，0.552μg/mL in H2O，0.808μg/mL in H2O，1.07μg/mL in H2O，1.2μg/mL in H2O，1.24μg/mL in H2O，1.5μg/mL in H2O，9.03μg/mL in H2O，15.3μg/mL in H2O，18.5μg/mL in H2O，25.5μg/mL in H2O，35.6μg/mL in H2O