Reference Material
This certificate is designed in accordance with ISO Guide 31This reference material(RM)was designed,produced and verified in accordance with a registered quality management system ISO 9001.All measurements were performed according to ISO/IEC 17025 by a DAkkS accreditedlaboratory(D-PL-19883-01-00).
Product Name Lactic acid
Product Code：DRE-C14582000
Lot Number ：1058591
CAS NO. 50-21-5
Format ：Neat
Mol. Weight ：90.08
Expiry Date ：06 Jul 2024
Mol. Formula ：C3H6O3
StorageTemp：20℃ ± 4℃
| CERTIFIED |
CERTIFIED |
| Purity |
Expanded Uncertainty (U) |
| 90.1%(g/g) |
5.0%(g/g) |
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% confidence level(k=2).Uncertainty is based on the Total Combined Uncertainty,including uncertainties of characterisation and stability testing.Stabilitv 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 expiry 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 of purchase
No chromatogram available.
Method of Characterisation
Purity was determined by quantitative1H-NMR
Method ofIdentification
EA,NMR
Batch Information
Water Content: 13.3%(g/g)by Karl-Fischer-Titration(U(exp)=1.0%(g/g))
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 the national standards(DKD).The calibration of the balances is verified daily internally and annually by an external accredited calibration service.Chromatographic methods are traceable to theInternational System of Units(SI).
The RM should be stored in the original sealed container at the indicated temperature.
Instructions for use
It 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.
注：以上信息仅供参考，以产品附带证书为准。
