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Standard Lithium Provides Update ON Its Operational Direct Lithium Extraction and Carbonate Crystallization Plants

Corporate Updates

STANDARD LITHIUM PROVIDES UPDATE ON ITS OPERATIONAL DIRECT

LITHIUM EXTRACTION AND CARBONATE CRYSTALLIZATION PLANTS

July 15 th, 2020 – Vancouver, BC – Standard Lithium Ltd. (“Standard Lithium” or the

“Company”) (TSXV: SLL) (OTCQX: STLHF) (FRA: S5L) an innovative technology and

lithium development company, is pleased to provide updates regarding its two operational pilot

plant projects. Firstly, the Company’s pre-commercial Direct Lithium Extraction (DLE)

Demonstration Plant at LANXESS’ South Plant facility in southern Arkansas has been operating

successfully since late May, and has been producing concentrated lithium chloride product, as

per its design. This first-of-its-kind pre-commercial plant, which uses Standard Lithium’s

proprietary LiSTR DLE technology, has been operating on a 24/7 basis using tail-brine feed

from the existing LANXESS facility. The plant has been undergoing a series of optimisation

exercises to improve performance and reliability of the various unit operations and improve the

quality of the final lithium solution. Additional work is also being completed at the project site

to construct the foundations required to house the integrated SiFT Pilot Plant (see below) at the

Arkansas Project Site, when international border restrictions allow. Photos of some operations

within the plant are shown below in Figures 1 & 2.

Secondly, the Company’s industrial-scale lithium carbonate SiFT crystallization pilot plant is

beginning initial lithium carbonate crystallization work. The commissioning phase of the plant

has been successfully completed; all hot and cold hydraulic and filtering systems have operated

successfully; real-time laser microscopy and crystal photoanalytical tools have been installed,

and control systems have been tested. The plant will begin initial crystallization work this week

using a lithium chloride solution that was produced last year by the Company’s Mini-Pilot DLE

Plant, that operated continuously at the SGS testing facility in Ontario (note, this lithium chloride

solution was produced from Arkansas brine). Once the lithium chloride product from the

operational DLE plant in Arkansas is optimised, it will be shipped in bulk to Richmond, BC for

final conversion in the SiFT plant. Transport of bulk volumes of polished lithium chloride

product will continue to be shipped from Arkansas to BC, until such time that border restrictions

are lifted, and it is possible to move the SiFT plant and Standard Lithium staff from BC to

Arkansas.

Dr. Andy Robinson, President and COO of Standard Lithium commented “Standard Lithium

continues to execute on our key project milestones; we have successfully started and operated

the industrial scale DLE plant in Arkansas, and now we are starting up our next-generation

lithium carbonate crystallisation plant. These achievements are a testament to the hard work

and dedication of our talented technical team and our project partners. We continue to make

significant strides towards commercial execution, and our large-scale pilot plants provide the

necessary proof-of-concept.”

Figure 1: Standard Lithium’s analytical chemist performs real-time tests on process samples in the dedicated

laboratory attached to the pre-commercial DLE Demonstration Plant in El Dorado, Arkansas, USA.

Figure 2: Standard Lithium and Saltworks chemical engineers running through system commissioning procedures at

the SiFT battery-quality lithium carbonate Pilot Plant, in Richmond, BC, Canada

About Standard Lithium Ltd.

Standard Lithium (TSXV: SLL) is an innovative technology and lithium development company.

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 has commissioned its first of a kind industrial scale

Direct Lithium Extraction Demonstration Plant at LANXESS’ South Plant facility in southern

Arkansas. The Demonstration Plant utilises the Company’s proprietary LiSTR technology to

selectively extract lithium from LANXESS’ tailbrine. The Demonstration Plant is being used for

proof of concept and commercial feasibility studies. The scaleable, 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

On behalf of the Board of Standard Lithium Ltd.

Robert Mintak, CEO & Director

For further information, contact Anthony Alvaro at (604) 240 4793

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.