--JW Posted November 25, 2011 Share Posted November 25, 2011 Hi, I have a microscope with a 100x oil immersion objective. I don't want to buy costly immersion oil, so I was wondering if there is some sort of alternative you can use? Thanks. Link to comment Share on other sites More sharing options...
Microscope.com Posted January 17, 2012 Share Posted January 17, 2012 Immersion oils for microscopy have a high refractive index to increase the numerical aperture of the objective lens. The typical immersion oil has a refraction index of 1.515. Before the advent of synthetic immersion oils, Cedar tree oil was used. As with other oils, Cedar oils primary disadvantage is in its absorption of ultraviolet and blue light as well as a number of other problems. Long story short, go with the synthetic. Link to comment Share on other sites More sharing options...
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