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Certificate of Analysis

YSI Incorporated

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

Phone: 937 767-7241 | Toll-Free: 800 765-4974 | Fax: 937 767-9353

Product Information

Product Category: Membrane

Product Model Number: 2735

Lot Number: 25G100497

Method: Amperometric testing with standards

Test Results

Time of Testing	Determination	Specification	Results
Initial	Average Calibration Sensitivity	8.0-40.0 nA	12.2 nA
	Average Linearity	7.6-8.4 mmol/L	7.99 mmol/L
	Potassium Ferrocyanide	< 0.4 mmol/L	0.01 mmol/L

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: Christy Woodford

Date: 7/29/2025

[ISO 9001 Certified YSI Incorporated logo]

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