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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 Information

Product Category: Buffer and solid products
Product Model Number: 1579
Lot Number: 25G100143
Method: Verification of mass and pH (for buffers)

Analysis Results

Determination	Specification	Result
Average mass	N/A	N/A
Average Ph (buffers only)	9.00 ± 0.10	8.96

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.

Completed by: Amanda Fenner

Date: 7/09/2025

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