Hektoen International

A Journal of Medical Humanities

Tag: The Journal of Laboratory and Clinical Medicine

  • Litmus paper and other pH indicators

    To many a physician the word litmus brings back unpleasant memories from medical school, something to do with Bunsen burners, incomprehensible lectures on acid-base balance, or experiments going wrong and exploding in the chemistry lab. Litmus itself is a mixture of organic substances obtained from lichens and used as an acid-base indicator—even in nature, such…