00:01
So here we have been asked to calculate the rbc concentration.
00:04
So first of all the volume contained by each of these separate areas, when it is put under a cover slip, the volume contained by each area is approximately 10 to the power minus 4 ml.
00:31
And that is for a cover slip hemocytometer which are approximately 0 .1 mm deep.
00:43
So what is done is, how it is measured is, the cells are counted in the 3 large squares.
00:53
Actually there are 4 large squares but in this picture only 3 large squares are given.
00:57
So we count the number of cells in these 3 large squares and we can see that some cells have touched the borders.
01:06
So we don't count all the cells which touch the borders, we only count cells which touch any 2 borders.
01:13
There are 4 borders, we count cells which are touching any 2 borders.
01:18
For example say in this case i have counted the upper border and the left border.
01:23
And then we determine the average...