What is the ideal concentration of ethyl alcohol used when fixing blood, tissue films and smears?
A)70% ethyl alcohol
B)75% ethyl alcohol
C)85% ethyl alcohol
D)95% ethyl alcohol

Question

Quizplus · Accepted Answer

95% ethyl alcohol
The ideal concentration of alcohol used when fixing blood, tissue films and smears is 95% ethyl alcohol. If lower concentrations are used, there's a tendency that the red blood cells become hemolyzed and the white blood cells are inadequately preserved. Other concentrations of ethyl alcohol are not ideal for use when fixing blood, tissue films, and smears.

What Is the Ideal Concentration of Ethyl Alcohol Used When