Inorganics - WS PT,  Proficiency Testing

WS – Color #PEI-131

A 100 mL whole volume sample for determination of Color. Formulated in the range of 1 - 25 CU. (Supplied in duplicate) read more

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Catalog Number:
PEI-131
Choose Study

WS-137, WS-138, WS-139, WS-140

Drinking Water Chemistry WS Proficiency Study Schedule

2024 WS Drinking Water Chemistry PT Study Schedule
Study Number Study Opens Study Closes
WS-137 Jan. 8, 2024 Feb. 21, 2024
WS-138 April 3, 2024 May 17, 2024
WS-139 July 2, 2024 Aug. 15, 2024
WS-140 Oct. 15, 2024 Nov. 28, 2024

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