General description
The buffer solution (di-sodium hydrogen phosphate/potassium
dihydrogen phosphate) is gravimetrically prepared using high-quality salts in
high-purity water. It is quality controlled and qualified in an ISO/IEC 17025
accredited calibration lab. Its pH value of 7.00 at 20°C is qualified following
a 5-point calibration method, using a combined glass electrode, in accordance
with DIN 19268, against reference buffer solutions following 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.
Application
The di-sodium hydrogen phosphate/potassium dihydrogen
phosphate buffer solution finds applications in analytical procedures for the
calibration, qualification, and monitoring of pH measuring instruments.
Features and Benefits
- Measured
and qualified at 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 the 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
