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Why PTFE (polytetrafluoroethylene) coated tweezers?

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Why PTFE (polytetrafluoroethylene) coated tweezers?

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Be sure to understand the trade offs and advantages of the different materials of construction of the SPI Supplies tweezers. For electron microscopy applications, especially TEM applications using osmium tetroxide, the PTFE coating will provide a high level (but not 100%) of protection of the metal from attack by osmium tetroxide.

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