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Standard Lithium Makes Better Than 99.9% Battery Quality Lithium Carbonate

Drill Results

STANDARD LITHIUM MAKES BETTER THAN 99.9% BATTERY QUALITY

LITHIUM CARBONATE

March 9 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 report that it has produced its first >99.9% purity

(also known as ‘three-nines’) battery quality lithium carbonate using the Company’s proprietary

‘SiFT’ crystallisation technology. This optimisation work was performed at the University of

British Columbia (UBC) and was partially funded by a grant of $300,000 awarded to the

Company and UBC by Innovate BC (note to the reader: this lithium carbonate crystallisation

optimisation work is separate from the ongoing commissioning of the Company’s LiSTR Direct

Lithium Extraction demonstration plant in south Arkansas)

The SiFT technology was re-run on solids that had been previously produced (see news release

dated 09 th Jan 2019) , and involved a single additional re-crystallisation step. The resulting

lithium carbonate crystals were analysed at UBC using low-detection-limit ion-chromatography

techniques (similar to those used in the pharmaceutical industry to determine impurities at low

levels). The lithium carbonate samples were analysed for the main suite of cation contaminants

that are typically found in commercially sold products, and the results are provided in the table

below.

Contaminant Lithium Carbonate

Initial Re-crystallised

Sodium 2,270 ppm 60 ppm

Calcium 145 ppm <36 ppm

Magnesium <22 ppm <22 ppm

Potassium <21 ppm <21 ppm

Total Cation

Contaminants

<2,458 ppm

(<0.246 wt.%)

<139 ppm

(<0.014 wt.%)

As seen in the table, the total cation contaminants in the lithium carbonate were reduced from

less than 2,458 ppm (or <0.246 wt.%) to less than 139 ppm (or <0.014 wt.%), resulting in a

purity of >99.9 %. Actual purity may be greater than this figure, but additional analyses will be

required to definitively determine the total impurity profile (i.e. to quantify chloride, sulphate

and boron concentrations at expected very low levels). Additional work is being completed by

UBC, using the grant money, to optimise how the ion-chromatography system can be integrated

into the overall SiFT process to provide real-time analytical data during crystallisation.

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

refinement of our SiFT crystallisation technology is emblematic of Standard Lithium’s drive to

bring lithium chemical processing into the 21 st Century. We continue to improve the technology,

in terms of performance, robustness and scalability. We are also finalising our efforts in terms

of IP protection and the delivery of a full-scale crystallisation pilot plant to our South Arkansas

Project site. The combination of the Company’s SiFT and LiSTR technologies will provide a

new platform for the production of battery quality lithium compounds for current and next

generation lithium-ion batteries.”

Quality Assurance

Dr. Ron Molnar, Professional Metallurgical Engineer (Ontario P.E.# 100111288), is a qualified

person as defined by NI 43-101, and has reviewed and approved the scientific and technical

information that forms the basis for this news release. Dr. Molnar is independent of the

Company.

Grant of Options

The Company also announces that, subject to regulatory approval, it has granted a total of

4,450,000 incentive stock options (“Options”) to certain directors and officers of the Company in

accordance with the Company’s incentive stock option plan, and as compensation for ongoing

services rendered to the Company. The Options vest immediately and are exercisable at a price

of $0.76 for a period of thirty-six months.

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.

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

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.