Unit II: Bacterial Morphology and Cellular Structures

The 10x objective is called the low power objective and it has a working distance of 4-8 mm. The 40x objective is also called the high dry and is used most often for wet mounts and hanging drops. It has a working distance of about 0.5-0.7 mm. The 100x objective is the oil immersion lens and it is marked with a black circle around the neck. ................
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