News & Events

SMIIC MC Training on The use of CRM pH for Calibration of pH-meters in the pH-mode

The 42st SMIIC MC Training within the SMIIC MC Work Plan 2021 – 2023 V3 was the The use of CRM pH for Calibration of pH-meters in the pH-mode that took place on the 30 May 2023  virtually, technically hosted by SMIIC General Secretariat. 14 experts participated in the training.

The training was hosted by NMI: SASO National Metrology and Calibration Center (NMCC)

General Description: The training covers information on the multipoint calibration of pH-meters and its uncertainty budget.

Objective, expected outcome: To provide knowledge about calculation of the uncertainty budget.

Who should attend: The training would be attended by staff working in metrology laboratories at the level of NMIs and testing laboratories.

Guide to the expression of uncertainty in measurement (GUM)

Date: (30 May 2023)

Duration: 3 hours

Lecturer: Mr: Rashed A. AlDosari (r.dosari@saso.gov.sa)

Time Schedule: 10:30 – 13:30


  • Calibration using CRM buffer solution
  • Sources of uncertainty
  • Estimation of uncertainty