OC Laboratory

Event CoordinatorEvent Vice-Coordinator
Melodi Clark
Surveillance Lab Manager
Wastewater Chemist
City of Columbus

Nora Lough
Narragansett Bay Commission
Providence, RI

   

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2025 Laboratory Event Description 

2025 Laboratory Judging Sheets:  Head Judge; Judge 2; Judge 3; Judge 4   
The judging sheets are provided primarily for event coordinators and judges information only. They are not part of the procedures or the rules of the event. They are for reference only and do not govern; the event descriptions govern. They are updated periodically and are subject to change at any time, without notice. They may not be used in any form of protest or question. There may be actions that are penalties that are not explicitly listed as an example on the penalty sheet.

Laboratory Event Tutorial*NEW 11/2025
Tutorials should be used as an overall suggestion not 100% accurate
Bench Sheet and CalculationsEquipment PurchaseTables
Chlorine Bench SheetDiscount Codes for Hach purchases (20% off) 

US - LABTEST
Canada – LABTESTCA

Table Layout 
Photo is two set ups back to back. WEFTEC  setup will be tables in a row – left to right – at an angle.  Like an arrowhead.



Phosphate Bench Sheet


Calculations for the PO4 and CL2 solution/concentration




10209 instructions






**These videos are for informational purposes only and may not necessarily be a clean run.

Ask A Question

Questions are accepted up until 9/18/26. Questions can be asked at the pre-competition meeting on Monday, September 28 in New Orleans

QuestionAnswerDate