标准品/水中胆碱酒石酸氢盐||cas:87-67-2|西域试剂

标准品/水中胆碱酒石酸氢盐，2500μg/mL

产品编号西域质检-TM16813

Cas号87-67-2

纯度/浓度2500μg/mL

储存温度冷藏

规格￥900.00元

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商品信息
详细数据

基本信息

中文名称：标准品/水中胆碱酒石酸氢盐
英文名称：
CAS NO：87-67-2
分子式：
分子量：

Reference 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(产品名称) Choline Bitartrate in Water,2500μg/mL(水中胆碱酒石酸氢盐)

Part Number(产品编号) 93176x

Lot Number(产品批号) 23020002a

CAS No. 87-67-2

Mol. Formula(分子式) C₅H₁₄NO·C₄H₅O₆

Mol. Weight(分子量) 253.25__________________________________

Storage Temp(存储条件) (2~8)℃,Keep in the shade
冷藏(2~8)℃,置于阴凉处

QC Test Results
Item	Test Results
Analysis method(分析方法)	/
Concentration(浓度)	2500μg/mL(free base)
Relative Expanded Uncertainty(k=2)(相对扩展不确定度)	1%
Expiry Date(失效日期)	2024-Feb-09

Note:

The standard value of Choline Bitartrate in Water is choline hydroxide.(水中胆碱酒石酸氢盐的标准值以胆碱氧化物计)

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 preparation, purity of neat materials, homogeneity, stability testing.

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
2023-Feb-10		RM Release