Shanghai, China, Aug. 18, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- BSL (Baoshili) recently released the results of its metal ion leaching validation conducted on its 200 L ultra-clean HDPE drum using G5-grade (96%) sulfuric acid. After eight months of continuous immersion in G5-grade sulfuric acid, the leaching concentration of each individual metal impurity remained below 10 ppt (parts per trillion), in compliance with the packaging, storage, and transportation requirements for G5-grade high-purity chemicals. <img alt="" height="450" src="https://ml.globenewswire.com/Resource/Download/2b9289db-5088-4666-9b6d-f637e8d4fa15/1-1.png" width="800" data-dpi="192" data-filename="1.1.png" /> These results demonstrate BSL’s capabilities in raw material formulation and manufacturing process innovation. In addition to maintaining metal ion leaching at the ppt level, BSL’s ultra-clean HDPE drums deliver industry-leading performance in key parameters such as particle release and UV transmittance. To date, BSL has secured nearly 20 proprietary intellectual property rights for the ultra-clean HDPE drum, covering the drum body and related components. <img alt="Figure: Metal Ion Leaching" height="361" src="https://ml.globenewswire.com/Resource/Download/f4bf5293-559d-45a3-afd3-ab86c045cdac/1-2.png" width="800" data-dpi="192" data-filename="1.2.png" /> <img alt="Figure: Particle Release" height="402" src="https://ml.globenewswire.com/Resource/Download/67aa98da-a7c5-4c71-af38-db4fe03b40c2/1-3.png" width="800" data-dpi="192" data-filename="1.3.png" /> The manufacture of ultra-clean HDPE drums involves significant technical barriers, and only a limited number of companies worldwide are capable of mass production. With continued advances in the core technologies behind its ultra-clean HDPE drums, BSL is rapidly expanding its presence in the high-end chemical packaging market. BSL continues to expand its portfolio of ultra-clean chemical packaging solutions, with new products—including ultra-pure small-volume containers and photoresist packaging containers—to be introduced in stages. <pre>CONTACT: Lotus Huang
lotus@xmbsl.com</pre> <img alt="" src='https://ml.globenewswire.com/media/NTM4MDhmZjMtOWE3Zi00NTY1LWI4Y2QtMWQ2N2RjZWFiM2Y2LTUwMDE2NjY4OC0yMDI2LTA4LTE4LWVu/tiny/Baoshili-Shanghai-New-Material.png' referrerpolicy='no-referrer-when-downgrade' />

BSL Ultra-Clean HDPE Drum Performance: Validation G5-Grade Sulfuric Acid Metal Ion Leaching Consistently ≤10 ppt

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