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Standard Lithium Completes Installation of Final Modules of Its “Listr” Direct Lithium Extraction Demonstration Plant at the Arkansas Project Site

Metallurgy & Processing

STANDARD LITHIUM COMPLETES INSTALLATION OF FINAL MODULES OF ITS

“LiSTR” DIRECT LITHIUM EXTRACTION DEMONSTRATION PLANT AT THE

ARKANSAS PROJECT SITE

- Targeted to Produce 100-150 Tonnes per Annum of Battery Quality Lithium Carbonate

- First-of-a-kind direct lithium extraction demonstration plant, being deployed in Southern

Arkansas

15th October, 2019 – Vancouver, BC – Standard Lithium Ltd. (“Standard Lithium” or the

“Company”) (TSXV: SLL) (OTCQX: STLHF) (FRA: S5L), is pleased to announce that the final

modules of the Company’s “LiSTR” direct lithium extraction Demonstration Plant have been

transported to and are currently being installed at Lanxess’ South Plant facility i n southern

Arkansas (the “Site”).

Fabrication and initial QA/QC testing of the final Phase 3 Modules of the Demonstration Plant

was completed in early O ctober, and the modules (8 modules in this final Phase 3, plus spare

parts) were separated and shipped to the Site . The Phase 3 modules have now arrived at the Site

and are in the process of being installed and connected. Current photos of the Demonstration

Plant Site, showing the installed modules in Figures 1 and 2 below.

Once all the modules are installed, the project engineers and contractors will continue connecting

and testing all the modules and installing the tie-ins to utilities and services. The commissioning

process is scheduled to begin in November.

Figure 1: Demonstration Plant Project site, showing Phases 1,2 and most Phase 3 Modules installed – photo taken

11th Oct 2019

Figure 2: Demonstration Plant Project site, showing Phases 1,2 and most Phase 3 Modules installed – photo taken

14th Oct 2019

The Demonstration Plant is designed to continuously p rocess an input tailbrine flow of 50

gallons per minute (gpm; or 11.4 m3/hr) from the Lanxess South Plant, which is equivalent to an

annual production of between 100-150 tonnes per annum Lithium Carbonate Equivalent (LCE).

The Demonstration Plant is based on Standard Lithium’s proprietary L iSTR technology, that

uses a solid sorbent material to selectively extract lithium from Lanxess’ tailbrine.

The environmentally friendly p rocess eliminates the use of evaporation ponds, reduces

processing time from months to hours and greatly increases the effective recovery of lithium.

Dr Andy Robinson, Standard Lithium President and COO, commented “our roll-out of the LiSTR

direct lithium extraction Demonstration Plant continues to be executed on-schedule, and

Standard Lithium would like to thank our project partners for all their efforts in keeping this

Project constantly moving forward. We n ow have a full project team in place, and plant

operators are currently undergoing process-specific training. We look forward to beginning the

commissioning phase in November and starting the next exciting step of this Project.”

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”, “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 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.