BPAL-1: Certified Reference Material of carbon-13 labelled bisphenol A
The following tables show those constituents for which certified and information values have been established for this [13C5]-bisphenol A certified reference material (CRM).
The certified value shows the purity of [13C5]-bisphenol A. Certified and information values are based on results from data generated at NRC using quantitative proton nuclear magnetic resonance spectroscopy (1H-qNMR). The expanded uncertainty (UCRM) in the certified value is equal to U = kuc where uc is the combined standard uncertainty calculated according to the JCGM Guide and k is the coverage factor. A coverage factor of two (2) was applied. It is intended that UCRM accounts for every aspect that reasonably contributes to the uncertainty of the measurement.
|Substance||Molecular formula||Mass fraction, g/g|
|[13C5]-bisphenol A||13C5C10H16O2||0.9969 ± 0.0040|
|Substance||CAS Number||Molecular formula||Mass fraction, g/g|
This reference material is primarily intended for use in the calibration of procedures and the development of methods for the determination of bisphenol A. A minimum sample mass of 2 mg is recommended.
It is recommended that the material be stored at 4 oC or lower.
Included in the combined uncertainty estimate (uc) are uncertainties in the batch characterization (uchar), uncertainties related to possible between-bottle variation (uhom), short-term stability (ustability) and uncertainties related to variability between the different qNMR signals (umethod). Expressed as standard uncertainties, these components are listed in Table 3.
Date of issue: September 2017
Date of expiry: March 2020
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