InvestorNewsBreaks – Standard Lithium Ltd. (TSX.V: SLL) (FRA: S5L) (OTCQX: STLHF) Commences PEA Work on TETRA Property

May 17, 2021

Standard Lithium (TSX.V: SLL) (FRA: S5L) (OTCQX: STLHF), an innovative technology and lithium project development company, today announced it has commenced work on a Preliminary Economic Assessment (“PEA”) on its TETRA Property located in the south-western region of Arkansas. The PEA will consider an integrated project that includes brine supply and injection wells, pipelines and brine treatment infrastructure, a direct lithium extraction plant using the company’s proprietary LiSTR technology, and a lithium chloride to lithium hydroxide conversion plant. “We continue to evaluate and accelerate our lithium brine project development activities in southern Arkansas. The TETRA project is a very high-quality resource with excellent lithium grades, reservoir characteristics and existing infrastructure,” said Dr. Andy Robinson, Standard Lithium president and COO. “We have an experienced integrated technical team in place, led by NORAM, that will deliver a PEA that demonstrates the immense value it contains. This work will continue Standard Lithium’s mission of combining technological improvements with the highest quality lithium brine assets to deliver the next generation of sustainable lithium products in North America.”

To view the full press release, visit https://ibn.fm/Fc7E

About Standard Lithium Ltd.

Standard Lithium 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’s south plant facility in southern Arkansas. The demonstration plant utilizes the company’s proprietary LiSTR technology to selectively extract lithium from Lanxess’s tail brine. The demonstration plant is being used for proof-of-concept and commercial feasibility studies. The scalable, 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.”  For more information, please visit the company’s website at www.StandardLithium.com.

NOTE TO INVESTORS: The latest news and updates relating to STLHF are available in the company’s newsroom at http://ibn.fm/STLHF

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