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Objectives specifically designed for this purpose are known as oil immersion objectives. Oil immersion objectives are used only at very large magnifications...
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The most powerful lens of the light microscope is the 100x oil immersion objective. Because light is refracted every time it passes through a medium with a...
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Using immersion oil When to use an oil immersion lens To use an oil immersion lens, first focus on the area of specimen to be observed with the high dry (400x) lens. Place a drop of immersion oil on the cover slip over that area, and very carefully swing the oil immersion lens into place.
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The 23 C value for general purpose immersion oil is higher than the ideal room temperature of72°F (22.2°C) and allows for some increase in temperature for radiant heat from the microscope lamp and other sources.
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This step is important at the highest magnification (oil immersion or 1000X). with oil, the lens must be cleaned with fluid designated for this purpose.
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Immersion oils are formulated for just this purpose. High-power objectives of 90X or higher are almost invariably intended for use with oil and will be...
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When using high-power achromat oil immersion objectives, it is sometimes permissible to Many countries have published their own standards for the necessary qualities of immersion oils and the International Standards Organization has recognized the ISO 8036 standard optical properties for general purpose immersion oils:
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When the FDA set general purpose reagent criteria under the classification of In Vitro Diagnostics in the 1970's, Cargille Immersion Oils were already in full accord. To date, no other immersion oils meet the FDA criteria. Developed low fluorescence immersion oil (1940).
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What is the purpose of the oil immersion objective of the microscope and what is its magnification value? What is the purpose of measuring the pulse on a patient, and in what abnormal conditions is it important?
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Microscope equipped with 100X, oil immersion lens Immediately after using the oil, remove any residual oil from the slide and from the front of the 100X objective by gently rubbing with lens paper dipped in xylol, toluene, or better, a xylol substitute designed for this purpose.
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