Your Safer Source for Science

Since 1977

Address Flinn Scientific Canada, Inc. 175 Longwood Road South Hamilton, ON L8P 0A1
Phone 844-200-1455
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Why does blood in the veins look blue? Is the blood blue until it comes in contact with air and then it turns red? Does light turn it red?


  • Absorption
  • Reflection
  • Visible Spectrum