尿素-13CReference Material This certificate is designed in accordance with?ISO 17034?and?ISO Guide 31. This reference material (RM) was designed,produced and verified in accordance with?ISO/IEC 17025,?ISO 17034?and a registered quality management system?ISO 9001. Product Name(產(chǎn)品名稱)?Urea-13C(尿素-13C) Product Code(產(chǎn)品編號)731791-1g ? Lot Number(產(chǎn)品批號)- ? CAS No.58069-82-2 ? Unlabeled CAS No.57-13-6 ? Mol. Weight(分子量)61.05 ? Mol. Formula(分子式)13CH4N2O ? Melting Point(熔點(diǎn))N/A ? Expiry Date(失效日期)2025-Apr-27 ? Boiling point(沸點(diǎn))N/A_______________________________ ? Appearance(外觀)White to Off-White Solid
(白色固體)__ ? Storage Temp(存儲條件)(2~8)℃,Keep in the shade
冷藏(2~8)℃,置于陰涼處 
C E R T I F I E D Purity 99.0%(Isotopic Value:99.0%) ? C E R T I F I E D Expanded Uncertainty (U) 0.5% Uncertainty The certified value(s) and uncertainty(ies) are determined in accordance with?ISO 17034?with an 95% confidence level(k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation, homogeneity and stability testing. Stability values are based on real evidence opposed to simulation. Traceability The balances used for gravimetric measurements are calibrated with weights traceable to the national standards. The calibration of the balances is verified annually by an external accredited calibration service. This analysis method has been verified using an approach consistent with?ISO 17034:2016?&?ISO 17025:2017. | CERTIFICATE????ON | QC????SIGNATURE |
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Method of Identification HPLC
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