Certificate of RegistrationThis certifies that the Quality Management System of

Southwest Research InstituteChemistry & Chemical Engineering Div.

6220 Culebra P. O. Box 28510

San Antonio, Texas, 78238, United States

has been assessed by NSF-ISR and found to be in conformance to the following standard(s):

ISO 9001:2015Scope of Registration:

Provision of contract research and development services for government and commercial customers in environmental and analytical chemistry; fire testing; engineering; and certification; microcapsulation and polymers, and environmental and chemical engineering.

Carl Blazik,Director, Technical Operations & Business Units,NSF-ISR, Ltd.

Certificate Number: 0Z801-IS6Certificate Issue Date: 24-MAY-2018Registration Date: 23-MAY-2018Expiration Date *: 22-MAY-2021