In this case, the sample is confined in a solid Teflon trade name for a synthetic resin composed of polytetrafluoroethylene metal-clad pressure vessel, introduced by the Canadian geochronologist Thomas E. Join the Community. In Zircon eds. Dear Mr. Welcome back! In most cases this bias, or fractionation, can be corrected if the precise ratio of two of the stable isotopes present is known.
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