Different colors change to correspond to different data ➀WHITE / YELLOWISH: No alcohol / less than 0.02% alcohol in saliva samples. ➁PALE BLUE: (20~40 / 0.02%~0.04%) alcohol in the saliva sample. ➂DARK BLUE: (80 / 0.08%) alcohol in the saliva sample. ➃DARKER THAN DARK BLUE:(300 / 0.3%) alcohol in the saliva sample.
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