Quality Assurance (QA) is the system used to verify that the entire analytical process is operating within acceptable limits, while Quality Control (QC) is the mechanisms established to measure non-conforming method performance.

QA/QC

https://anlab.ucdavis.edu/Pages/qa-qc

Sign in

The Levey-Jennings chart is a form of statistical process control (SPC) graph commonly employed in laboratory quality control contexts. Unlike the Shewhart individuals control chart, it relies on the long-term estimate of sigma instead of the short-term estimate within subgroups or samples. Control limits for proportion data are set at 10-20-30 percent. Instead of using the Nelson Rules, the Westgard Rules are advised to determine whether to release the results obtained from samples taken during the control or to rerun them.

Levey-Jennings Chart – Lean Manufacturing and Six Sigma Definitions

https://www.leansixsigmadefinition.com/glossary/levey-jennings-chart/

Lean Manufacturing and Six Sigma Definitions

A standard is material containing a precisely known concentration of a substance for use in quantitative analysis. \”Standard\” means a reference that can be used to determine unknown concentrations or to calibrate analytical instruments.

Controls have a determined range of values used as a benchmark or a point of comparison against which other test results are measured. Its purpose is to check contamination of the test instruments, equipment, and other implements with the substance being analyzed.

SU Intramurals 2023
Day 2, March 26, 2023:
Basketball ICLS vs CBA – Monapil Court, Larong Pinoy (tug of war, sack race) – Ravello Ballfield, Opening Program – Cimafranca Ballfield

Google Drive: Sign-in

https://drive.google.com/drive/folders/1yMSTCOJErPewr9iVQLHnIRa2YURNe3Ti

Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).

SU Intramurals 2023
Day 1, March 25, 2023: Larong Pinoy
Ravello Field

Google Drive: Sign-in

https://drive.google.com/drive/folders/1xnKEbC4wKnFKz6y48BEDf_uvTKSLHuuy

Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).