Final answer:
When performing eosinophil counts with a hemocytometer, we count both grids and calculate the average count by adding up the counts from both grids and dividing by two.
Step-by-step explanation:
When performing eosinophil counts with a hemocytometer, we count both grids on the hemocytometer.
The hemocytometer consists of two counting grids, each divided into smaller squares.
We count the eosinophils in both grids to get an accurate representation of their concentration.
To calculate the average eosinophil count, we add up the counts from both grids and divide by two.