Engineering360: "What is pH drift? How is it fixed?"

Your research very useful for HKAS HOKLAS accreditation of laboratory which require high accuracy in measurement, cannot allow small tolerances in accuracy。 I am HOKLAS Assessor, I will forward your research to HKICA that is consultant in HKAS for their reference. I am FHKICA and Registered Carbon Auditor in HKICA.

Good on u. Lord bless

Proprietor Samuel Lip

www.lordray.com.hk