Whats the minumum magnification needed on a microscope to see things such as blood cells?
Minimum magnification: 200x Seeing a blood cell needs special preparations, a.k.a. a Blood Smear. Making a Blood Smear: MATERIALS – sterilized lancet or needle – 20 clean microscope slides and coverslips – Canada balsam or other medium for permanent preparations – 95% ethyl or methyl alcohol – distilled water – Giemsa stain – low containers (you can make them with aluminum sheet also) Place a small drop of blood near an end of a slide. According to figure 7, bring the edge of another slide in contact with the drop and allow the drop to bank evenly behind the spreader. The angle between the two slides has to be 30-40 degrees. Now, push to the left in a smooth, quick motion. The smear should cover about half the slide. It is important that the quantity of blood is not excessive, otherwise the red cells could hide the leukocytes. So, if you succeed in making a gradual transition from thick to thin in your smear, you should get a zone with a satisfactory distribution of cells. With a singl
