Standard Lithium Files Non-Provisional US & International Patent Applications for Its Lithium Extraction Technology

Standard Lithium Files Non-Provisional US & International Patent Applications for Its

Lithium Extraction Technology

February 27th, 2019 – Vancouver, BC – Standard Lithium Ltd. (“Standard Lithium” or the

“Company”) (TSXV: SLL) (OTC-Nasdaq Intl. Designation: STLHF) (FRA: S5L), announced

that the Company has filed a patent application with the U.S. Patent and Trademark Office

covering the Company’s novel process for the recovery of Lithium from brine. Concurrently, an

application was also filed under the Patent Cooperation Treaty (PCT) extending Standard

Lithium’s entitlement to seek patent protection for this invention in member states to the PCT

(which includes all important industrialized markets). Both the U.S. and PCT patent applications

claim priority out of the Company’s previously filed U.S. provisional application.

The U.S. and PCT patent applications cover technology the Company and its Scientific Advisory

Team have developed. As previously reported, a lithium extraction Mini-Pilot Plant utilizing the

Company’s proprietary process has demonstrated that lithium can be selectively extracted from

raw brine (i.e. with no pre-treatment other than pH adjustment); can be converted into a

concentrated and substantially purified (compared to the feed brine) lithium chloride solution;

that the lithium-loaded sorbent material can be continuously regenerated and recycled to the

extraction stage; and that overall lithium extraction efficiencies of over 90% can be achieved.

The PCT is an international patent law treaty, which provides a unified procedure for fixing a

window to preserve the Company’s right to elect national or regional patent treatment in each of

the PCT member states. There are currently 152 member countries adhering to the PCT; thus,

enabling near-global patent coverage through successful patent prosecution, including in the

U.S., Japan, South Korea, Europe, Canada, Australia, New Zealand, China, Brazil, Russia, India,

and the countries subscribing to the European Patent Office.

About Standard Lithium Ltd.

Standard Lithium is specialty chemical company focused on unlocking the value of existing

large-scale US based lithium bearing brine resources. The company believes new lithium

production can be brought on stream rapidly by minimizing project risks at selection stage;

resource, political & geographic, regulatory & permitting, and by leveraging advances in lithium

extraction technologies and processes. The Company's flagship project is located in southern

Arkansas, where it is engaged in the testing and proving of the commercial viability of lithium

extraction from over 150,000 acres of permitted brine operations utilising the Company's

proprietary selective extraction technology. The Company is also pursuing the resource

development of over 30,000 acres of separate brine leases located in southwestern Arkansas and

approximately 45,000 acres of mineral leases located in the Mojave Desert in San Bernardino

County, California.

Standard Lithium is listed on the TSX Venture Exchange under the trading symbol "SLL";

quoted on the OTC - Nasdaq International Designation: STLHF; and on the Frankfurt Stock

Exchange under the symbol "S5L". Please visit the Company's website at

www.standardlithium.com.

Contact Information:

LHA Investor Relations, Mary Magnani, (415) 433-3777, [email protected]

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX

Venture Exchange) accepts responsibility for the adequacy or accuracy of this release . This news release may

contain certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation

Reform Act of 1995 and applicable Canadian securities laws. When used in this news release, the words

“anticipate”, “believe”, “estimate”, “expect”, “target, “plan”, “forecast”, “may”, “schedule” and other similar words

or expressions identify forward- looking statements or information. These forward- looking statements or

information may relate to future prices of commo dities, accuracy of mineral or resource exploration activity,

reserves or resources, regulatory or government requirements or approvals, the reliability of third party

information, continued access to mineral properties or infrastructure, fluctuations in t he market for lithium and its

derivatives, changes in exploration costs and government regulation in Canada and the United States, and other

factors or information. Such statements represent the Company’s current views with respect to future events and

are necessarily based upon a number of assumptions and estimates that, while considered reasonable by the

Company, are inherently subject to significant business, economic, competitive, political and social risks,

contingencies and uncertainties. Many facto rs, both known and unknown, could cause results, performance or

achievements to be materially different from the results, performance or achievements that are or may be

expressed or implied by such forward -looking statements. The Company does not intend, and does not assume any

obligation, to update these forward- looking statements or information to reflect changes in assumptions or

changes in circumstances or any other events affections such statements and information other than as required by

applicable laws, rules and regulations.