Certified Standards offering full and internationally recognised traceability!
pH Buffer IUPAC Standard Solution with Certificate of Conformity* and Traceability reporting exact pH buffer value with related expanded uncertainty (k=2). Traceable to IUPAC/NIST pH scale. Guaranteed shelf-life thanks to premium packaging. Colourless pH buffer solution. pH is 7.000 ±0.010 (k=2) at 25°C, 500 mL bottle.
*Available for download from uk.hach.com/CoA: using product part number and lot number.
Accredited Calibration Laboratory
Fully Traceable standards
Totally reliable packaging
GLP Right from the start and every day
Accredited reference material producer
Hach is accredited by the German accreditation authoriy DAkkS as registered reference material producer according to DIN EN ISO 17034:2017. The Hach calibration laboratory located in Berlin is registered according to DIN EN ISO/IEC 17025:2018.
Fully traceable standards
The use of standards manufactured by an accredited reference material producer provides complete confidence in the traceability chain and calculated uncertainties.
2 years shelf life guaranteed
Each standard is delivered in an airtight aluminum bag package ensuring safe storage.
Until first opening the certified value is guaranteed for 2 years from the date of issue of the certificate.
Each standard has its own Certificate of Analysis available for download from Hach website.
Each standard has its own Certificate of Conformity and Traceability available for download from Hach web site.