1.99012
Buffer Solution
(citric acid, sodium hydroxide, hydrogen chloride) tracable to SRM from NIST and PTB pH 2.00 (25°C) Certipur®
Synonyme(s) :
Buffer solution pH 2.0 (citric acid/sodium hydroxide/hydrogen chloride)
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A propos de cet article
NACRES:
NA.25
UNSPSC Code:
12161704
Service technique
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certified reference material
Quality Level
product line
Certipur®
pH
2.0 (25 °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
It is a certified buffer solution of citric acid/sodium hydroxide/hydrogen chloride, gravimetrically prepared using high-quality reagents at a registered calibration laboratory. It has a pH value of 2.00 at 25°C, measured using a combined glass electrode following a 5-point calibration method. The measurement is made in accordance with DIN 19268 using reference buffer solutions compliant to DIN 19266, NIST, IUPAC, Ph. Eur, and USP. The pH value of the buffer solution depends on the temperature and therefore a constant temperature must be maintained during its use.
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.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
The buffer solution is used as a standard in analytical procedures for the calibration of pH measuring instruments or pH electrodes and as a control for the measurement of pH of other solutions.
Features and Benefits
- Measured and qualified at an ISO/IEC 17025 and ISO 17034 accredited laboratory
- Directly traceable to secondary reference standards from NIST and primary certified reference materials from PTB
- Ready-to-use solution available in 30 mL sachets
- Accompanied with a detailed and batch-specific certificate of analysis (CoA) for an effective quality management system
- Product label follows the ISO Guide 31 and contains information about ordering number, article description, lot number, safety data, and expiry date
- Packaging material subjected to comprehensive stability studies as per ISO Guide 35
- An uncertainty of +/- 0.02 in the pH value at 25°C
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
Classe de stockage
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificats d'analyse (COA)
Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".
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Numéro d'article de commerce international
| Référence | GTIN |
|---|---|
| 1990120001 | 04027269027124 |