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標準品/二丙二醇單甲醚/異構體的混和物

型號：72011
類別：標準品
價格：240

標準品/二丙二醇單甲醚/異構體的混和物
產(chǎn)品編號：72011
CAS號：34590-94-8
規(guī)格：250mg
有效期：2028-12-18
品牌：TMstandard
標準值：99.7%

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二丙二醇單甲醚

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(產(chǎn)品名稱) Dipropylene Glycol Monomethyl Ether (Mixture of Isomers)(二丙二醇單甲醚)

Product Code(產(chǎn)品編號)72011

Lot Number(產(chǎn)品批號)-

CAS No.34590-94-8

Mol. Weight(分子量)148.20

Mol. Formula(分子式)C7H16O3

Melting Point(熔點)N/A

Expiry Date(失效日期)2028-Dec-18

Boiling point(沸點)N/A

Appearance(外觀)Liquid
(液體)______________________

Storage Temp(存儲條件)Normal temperature,Keep in the shade
常溫，置于陰涼處

C E R T I F I E D

Purity

99.7%

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
-		RM Release

Method of Identification

Intended Use

This RM is intended for use in a laboratory as a calibration and quality control standard or in method development for analytical techniques.

Storage

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.

Hazards

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.

Homogeneity

Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO 17034.

Instructions for use

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.