1.99017
Buffer solution (Potassium dihydrogen phosphate, di-sodium hydrogen phosphate) traceable to SRM from NIST and PTB
pH 6.86 (25 °C in H2O), Certipur®
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About This Item
UNSPSC Code:
12161706
NACRES:
NA.25
Recommended Products
grade
certified reference material
Quality Level
product line
Certipur®
pH
6.86 (25 °C in H2O)
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 Potassium dihydrogen phosphate & di-sodium hydrogen phosphate, gravimetrically prepared using high-quality reagents at a registered calibration laboratory. It has a pH value of 6.86 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
Packaging
30 ml in Fibre case
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
recommended
Product No.
Description
Pricing
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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