1.07202
Certified sec. standard reference buffer solution
potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 6.86 (25 °C), Certipur®
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About This Item
UNSPSC Code:
41116107
Recommended Products
grade
certified reference material
Quality Level
agency
complies with DIN 19266
product line
Certipur®
composition
potassium dihydrogen phosphate/di-sodium hydrogen phosphate
pH
6.86 (25 °C)
application(s)
environmental
food and beverages
general analytical
industrial qc
pharmaceutical
format
mixture
storage temp.
15-25°C
Related Categories
General description
The certified secondary standard reference buffer solution (potassium dihydrogen phosphate/disodium hydrogen phosphate) is gravimetrically prepared using high-quality reagents 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. It is qualified using a 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 a sealed 100 mL high-density plastic bottle
- Subjected to detailed stability studies as per ISO Guide 35
- Product label carryies relevant information on order number, article description, lot number, expiry date and safety data, in accordance with ISO Guide 31
- Accompanied with a detailed 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: 6.861 - 6.867
For complete data see the enclosed certificate
For complete data see the enclosed certificate
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
12 - Non Combustible Liquids
wgk_germany
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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