pHanal™ Reference Materials for pH Measurement

The certified reference materials are prepared using the highest purity starting materials (compounds) and deionized water with an electrical resistivity of ~18 mS.cm, filtered through a membrane filter with a pore size of 0.22 µm. The quality of the final product is verified by methods in accordance with the procedures defined in EN ISO/IEC 17025. A CRM certificate is issued for each CRM formulated in accordance with ISO guideline 31.

Certified Reference Materials for pH Measurement

The pHanal™ Certified Reference Materials are used for the calibration of pH measuring instruments and for the validation and verification of analytical methods for pH determination. The Certified Reference Materials are produced on the basis of accredited procedures within the scope of accreditation according to EN ISO 17034 and are certified on the basis of gravimetric preparation.p>

They are basic buffers for high-precision measurements, formulated by IUPAC and NIST, linked to the NIST SRM and thus to the IUPAC International Scale.

pHanal™ reference materials are designed for routine pH measurements and are produced using accredited procedures within the scope of accreditation according to EN ISO 17034. The pH value and its uncertainty are assigned to the reference material on the basis of gravimetric preparation. The solutions are also available in a color-coded version.