Rolla N. Harger Rolla

January 14th

  • Neil Harger was an American toxicologist and biochemist who was atIndiana University when he invented the first successful machine for testing human blood alcohol content, called the Drunkometer (1931).
  • The more crystals that change colour, the more alcohol is in the body. The Blood Breath Partition Ratio assumes that 2100mL of breath contains the same amount of alcohol as 1 mL of blood.

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