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YSI 7173 Check Solution Certificate of Analysis

Certificate of Analysis

[YSI Logo]

YSI Incorporated

Yellow Springs Instrument Co., Yellow Springs, Ohio 45387 USA

Phone 937 767-7241 • 800 765-4974 • Fax 937 767-9353

a xylem brand

Product Details

Product Category: Check Solution
Product Model Number: 7173
Lot Number: 25G100018
Method: Comparative conductivity testing of Production standard vs. Metrology standard

Test Results

Chemistry Tested	Determination	Tolerance	Result
Sodium	(Average of production) – (average of metrology)	± 1.0 %	0.58 %
Sodium	Coefficient of variation for production standard (CV, %)	≤ 2.0 %	0.56 %

Compliance Statement

The procedures used to manufacture and test this product have been verified by QA for compliance. The electronic signature below is representative of the Chemistry Technician testing and verifying conformity to acceptance criteria.

Completion Details

Completed by: Amanda Fenner

Date: 07/02/2025

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25G100018 Cindy Strawbridge Adobe PDF Library 25.1.51

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