Spex CertiPrep® pH buffers are accurate and certified to ISO/IEC 17025:2005 and ISO 17034:2016 requirements. Made using high purity starting materials and ASTM Type I water, they have been thoroughly analyzed for certified value and homogeneity.

Chemicals sold by Cole-Parmer are not intended for and should not be (i) used for medical, surgical or other patient oriented applications, or (ii) combined with any food product or ingested in any form.

Can’t find the standards you are looking for? Spex CertiPrep®can make custom standards to meet your exact needs. Contact us for more information at [email protected] or call us at 732-549-7144.