维生素E,分析标准品,HPLC≥98.5%
产品编号：西域质检-TM17305| CAS NO：1406-18-4| 分子式：C24H34N4O5S| 分子量：490.61600
维生素E是人类和动物繁殖所必需的营养素，是一种脂溶性抗氧化剂。维生素E可以保护脂质免受氧化应激，并拯救谷胱甘肽（GSH）耗竭诱导的细胞对H2O2的超敏反应。补充维生素E可增加其在脑脊液和血浆中的水平，并降低Aβ水平，从而有益地影响阿尔茨海默病的氧化应激。维生素E还具有抗衰老作用。
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维生素E
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.
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.
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 | |
| 2022-Oct-09 |
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RM Release |
GC
Note
The compound is sensitive to light and oxygen.(该化合物对光和氧气敏感)
GC
Note
The compound is sensitive to light and oxygen.(该化合物对光和氧气敏感)
This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.
This reference material meets the specification stated in this certificate until the expiry date, provided it is stored unopened at the recommended temperature here in. If storage after opening is necessary, the RM should be tightly closed and kept from light and moisture.
Read Material Safety Data Sheet (MSDS) and understand any potential hazard(s) prior to the use of this product. All chemicals should be considered potentially hazardous in nature and should only be handled by qualified personnel using established good laboratory practices.
Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.
It is recommended to use 1 mg as the minimum sample size and if less material is used, to increase the certified uncertainty by a factor of two for half sample and four for a quarter of sample.Visit the support section of our website technology videos and frequently asked questions.
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