ug /mL to ppm, ppm to ug/mL ... 1 μg/mL = 0.001 mg / 0.001 L = 1 mg/L. 1 μg/mL = 1 mg/L ... [키워드] 1 ug/mL = 1 ppm, 1 ppm = 1 ug/mL.
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