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  • 基本信息
  • 质检信息
  • 材料安全信息
    Tetramethylurea (TMU) - Isotopic ratio (D/H)
    Used as internal standard for the determination of D/H isotope ratios of ethanol by 2H-NMR method (SNIF-NMR®)
    according to the formula 5-1 of Regulation EEC 2676/90.
    Certified value Uncertainty
    (D/H) by NMR ........................................ 141.9 x 10-6 .................. 0.9 x 10-6
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