1.07203
Certified sec. standard reference buffer solution
di-sodium tetraborate decahydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 9.180 (25°C) Certipur®
Synonym(s):
di-sodium tetraborate decahydrate buffer solution, pH 9.2 Certified Secondary Buffer Solution
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About This Item
NACRES:
NA.25
UNSPSC Code:
41116107
grade
certified reference material
Quality Level
agency
complies with DIN 19266
product line
Certipur®
pH
9.2 (25 °C in H2O)
bp
100 °C/1013 hPa
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 certified secondary standard reference buffer solution (di-sodium tetraborate decahydrate) is gravimetrically prepared from high-quality sodium borate in high-purity water. Its pH value is measured by differential potentiometry with two platinum hydrogen electrodes against primary certified reference materials from NIST & PTB. The pH is qualified using the 5-point calibration method, in accordance with DIN 19268, against certified primary reference standards as per DIN 19266.
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
The buffer solution can be used to calibrate, qualify, and monitor pH measuring instruments and as a control for testing other buffer solutions.
Features and Benefits
- Available in solution format in a secure 100 mL plastic bottle
- Subjected to detailed stability studies as per ISO Guide 35
- Relevant information on product label including order number, article description, lot number, expiry date and safety data, following ISO Guide 31
- Accompanying comprehensive and batch-specific certificate of analysis (CoA) for an effective quality management system
- 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
Analysis Note
pH-value: 9.180 - 9.186
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
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Storage Class
12 - Non Combustible Liquids
wgk
nwg
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 |
|---|---|
| 1072030105 | 04022536750163 |