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Ref. No. [UMCES] CBL 2015-014

ACT VS15-07

1

P

ERFORMANCE

V

ERIFICATION

S

TATEMENT

For the Xylem EXO 2 pH Sensor

T

ECHNOLOGY

T

YPE

:

pH sensors

A

PPLICATION

:

In situ estimates of pH for coastal moored deployments

P

ARAMETERS

E

VALUATED

:

Response linearity, accuracy, precision and reliability

T

YPE OF

E

VALUATION

:

Laboratory and Field Performance Verification

D

ATE OF

E

VALUATION

:

Testing conducted from December 2012 through July 2014

E

VALUATION

P

ERSONNEL

:

T. Johengen, G.J. Smith, D. Schar, M. Atkinson, H. Purcell, D.

Loewensteiner, Z. Epperson and M. Tamburri

N

OTICE

:

ACT verifications are based on an evaluation of technology performance under specific, agreed-

upon protocols, criteria, and quality assurance procedures. ACT and its Partner Institutions do not certify

that a technology will always operate as verified and make no expressed or implied guarantee as to the

performance of the technology or that a technology will always, or under circumstances other than those

used in testing, operate at the levels verified. ACT does not seek to determine regulatory compliance;

does not rank technologies nor compare their performance; does not label or list technologies as

acceptable or unacceptable; and does not seek to determine “best available technology” in any form. The

end user is solely responsible for complying with any and all applicable federal, state, and local

requirements.

This document has been peer reviewed by ACT Partner Institutions and a technology-specific

advisory committee and was recommended for public release. Mention of trade names or commercial

products does not constitute endorsement or recommendation by ACT for use.

Questions and comments should be directed to: Dr. Mario Tamburri

c/o Alliance for Coastal Technologies

Chesapeake Biological Laboratory

PO Box 38 / 146 Williams Street

Solomons, Maryland 20688, USA

Email:

Tamburri@umces.edu