1.09433
Buffer solution
(citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 2.00 (20°C) Certipur®
Synonym(s):
Buffer solution pH 2.00 (20°C) (citric acid/sodium hydroxide/hydrogen chloride)
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About This Item
NACRES:
NA.25
UNSPSC Code:
12161704
grade
certified reference material
Quality Level
product line
Certipur®
pH
2.0 (20 °C in H2O)
density
1.00 g/cm3 at 20 °C
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
General description
The buffer solution (citric acid/sodium hydroxide/hydrogen chloride) is gravimetrically prepared using high-quality reagents and quality controlled and qualified in an ISO/IEC 17025 accredited calibration lab. Its pH value of 2.00 at 20°C is qualified using a combined glass electrode following a 5-point calibration method, in accordance with DIN 19268, against certified primary reference standards as per DIN 19266, IUPAC, NIST, USP, and Ph. Eur.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
It is used in analytical procedures involving the calibration, qualification, and monitoring of pH measuring instruments and as a control for testing other buffer solutions.
Features and Benefits
- Measured and qualified in an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Traceable to SRMs from NIST and primary certified reference standards from PTB
- Ready-to-use solution available in a sealed bottle and an innovative Titripac® packaging for positive environmental impact due to reduced waste generation
- Long-lasting with a shelf life of 3 years
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective audit
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
Titripac is a registered trademark of Merck KGaA, Darmstadt, Germany
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Storage Class
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| D49504-1L | 04061837813153 |
| 84838-5ML | 04061837879456 |
| 84840-1L | 04061836693329 |
| 1187091-1ML | 04061838707826 |
| PHR1216-3X1.2ML | 04061837884023 |
| D49504-250ML | 04061837813160 |
| 84838-25ML | 04061837879449 |
| 84840-250ML | 04061833008249 |
| 1094331000 | 04022536114231 |
| 1094334000 | 04027269143589 |
| 1094339010 | 04022536513249 |