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Standard Lithium Announces Succesful Delivery and Begins Installation of Phases 1 & 2 of Its Direct Lithium Extraction Demonstration Plant to the Arkansas Project Site

Metallurgy & Processing

STANDARD LITHIUM ANNOUNCES SUCCESFUL DELIVERY AND BEGINS

INSTALLATION OF PHASES 1 & 2 OF ITS DIRECT LITHIUM EXTRACTION

DEMONSTRATION PLANT TO THE ARKANSAS PROJECT SITE

- First-of-a-kind industrial-scale direct lithium extraction demonstration plant, being installed

in Southern Arkansas

03rd September, 2019 – El Dorado, Arkansas – Standard Lithium Ltd. (“Standard Lithium”

or the “Company”) (TSXV: SLL) (OTCQX: STLHF) (FRA: S5L), is pleasedto announce that the

mobilisation of Phases 1 & 2 of the Company’s direct lithium extraction Demonstration Plant has

been successfully completed, and that the modules have been secured and are in the process of

being installed at the project location at Lanxess’ South Plant facility in southern Arkansas (the

“Site”). Standard Lithium’s Project Team is currently connecting the modules together, installing

the site office and control room and beginning to make utility connections.

Work at the project location at Lanxess’ South Plant facility in southern Arkansas continues to be

on-schedule, and installation and utility connection works will continue throughout September,

until the final shipment of modules, scheduled for late September/early October. Initial installation

of the modules by m obile crane is shown in Figure 1 below, and the current build-out of the

Demonstration Plant is shown in Figure 2.

Figure 1: Phase 1 & 2 Modules Being Unloaded and Moved into Position – photo taken Aug 23rd, 2019

Figure 2: Project Site Location Showing Installed Phase 1 & 2 Modules – Image taken Aug 28th, 2019

About Standard Lithium Ltd.

Standard Lithium (TSXV: SLL) is a specialty chemical company focused on unlocking the value

of existing large-scale US based lithium-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. The Company is currently

installing a first-of-its-kind Demonstration Plant that will use the Company’s proprietary technology

to selectively extract lithium from LANXESS’ tailbrine. This Demonstration Plant will be used to

prove commercial feasibility. The environmentally friendly process eliminates the use of

evaporation ponds, reduces processing time from months to hours and greatly increases the

effective recovery of lithium.

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 Intl Designation under the symbol “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]

On behalf of the Board,

Standard Lithium Ltd.

Robert Mintak, CEO & Director

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”, “forecas t”, “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 commodities, 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 the 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 factors, 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.