Reference Material

This certificate is designed in accordance with ISO Guide 31This reference material(RM)was desianedproduced ano verified in accordance with a registered quality management system ISO 9001.All measurements were performed according to ISO/IEC17025 by a DAkkSaccreditedlaboratory(D-PL-19883-01-00)

Product Name：lsobutyric acid
Product Code：DRE-C14395500

Lot Number：1017809 
DRE-C14395500 1017809 
CAS NO. ：79-31-2

Format：Neat 
Mol.Weight ：88.11

Expiry Date ：12 Aug 2025 
Mol.Formula：C4H8O2

Storage Temp ：20℃ ± 4℃

Uncertainty

The certified value(s) and uncertainty(ies)are determined in accordance with EURACHEM/CITAC Guide for
“Quantifying Uncertainty in Analytical Measurement,3rd edition”,with an 95%confidencelevel(k=2). Uncertainty isbased on the TotaCombined Uncertainty.includina uncertainties ofcharacterisation and stability testingStabillity values are based on real evidence opposed to simulation

The producer certifies that this reference material meets the specification stated in this certificate until the expirv date provided it is stored unopened at the recommended temperature herein.Product warranties for this reference material are set out in the terms and conditions ofpurchase

Method of Characterisation

Purity=100%-Assayimpurities-Watercontent(KF)-ResidualSolvents(NMR)

Method of Identification

EA.NMRRT.UVIR.MS

Batch Information

Water Content: 0.2%(g/g)by Karl-Fischer-Titration(U(exp)=0.1%(g/g))

Method Details
EluentA: 100%Acetonitrile

Eluent B:Water+H3PO4

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.

Safety

Proper precautions should be observed while handling.See Safety Data Sheet.

Traceability

The balances used for gravimetric measurements are calibrated with weights traceable to thenational standards(DKD).The calibration of the balances is verified daily internally and annually by an external accredited calibration service.Chromatographic methods are traceable to the International System of Units(SI).

Storage

The RM should be stored in the original sealed container at the indicated temperature.

Instructions for use

t is recommended to use 1 mg as the minimum sample size and if less material is usedto increase the certified uncertainty by a factor oftwo for half sample and four for a quarter of sample.If storage after opening is necessary,the RM should be tightly closed and kept from light and moisture. If the RM was in a sealed ampoule, it should be transferred to a vial with minimum head spaceVisit the support section of our website lgcstandards.com for a series of Dr. Ehrenstorfer Tech Tip videos and frequently asked questions.

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