标准品/四霉素P,1691242-03-1

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.

Note

Weight calculated by weighing mass multiplying the purity . To make a solution of 100 ug/mL of concentration , adding ImL solvent to the vial , before use shaking and/or ultrasonicating thoroughly.Recommended solvents : water. The solution should be prepared when using and not suitable for storage.(通过称量质量乘以纯度计算的重量。在使用摇动和/或超声波彻底清洗之前,向小瓶中加入ImL溶剂,以制备浓度为100 ug/mL的溶液。推荐溶剂：水。溶液应在使用时制备,不适合储存) The stability of the solution is in the research stage .(溶液的稳定性尚处于研究阶段)

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.