Bench Sheets and Control Charts for Labs
using Excel Spreadsheets
Bench Sheet Templates
These downloadable bench-sheet templates are available as a service to labs in the interest of quality data collection. Customize, if needed. Print off the blank worksheet to copy values, then open up the spreadsheet to enter them. Bench sheets are available for several analysis methods.
Control charting is a way to visually track performance to determine when a procedure is not meeting data-quality objectives. Control charts indicate when a procedure is headed out of control, so the analyst can pause, eliminate the source of the problem, and prevent the out-of-control situation. The spreadsheet files automate the construction and use of these charts.
Click to download worksheet:
Control Charts for Labs (.xlsx) is a downloadable spreadsheet tool with templates and instructions for both a standard-solution control test and one that uses duplicate solutions.
Biochemical Oxygen Demand (BOD) and Carbonaceous BOD (CBOD), an Ecology publication, has a good explanation and example of the use of control charting in Appendix E, Water and Wastewater (pdf).
Standard Method 5210-B BOD Quality Control Troubleshooting Worksheet offers guidance for Standard Method 5210-B, five-day BOD analysis. Includes troubleshooting chart and key.
Any suggestions for improvement will be appreciated. Please contact Alan Rue in Ecology's Lab Accreditation Unit at email@example.com or (360) 871-8844.
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