----Upholding High Standards to Safeguard Cultivation Safety and Sustainable Development

As an innovative leader in the field of hydroponic cultivation, UPuper® has always prioritized product safety and quality. We are pleased to announce that UPuper® rockwool cultivation substrates have passed heavy metal testing under U.S. standards and microbial safety testing under European standards, providing professional growers with a truly safe and reliable soilless cultivation solution.

Rigorous Testing, Demonstrating Our Commitment to Safety
The testing focused on potential heavy metal elements in rockwool substrates, including lead (Pb), cadmium (Cd), chromium (Cr), mercury (Hg), and arsenic (As), using the U.S. TCLP (Toxicity Characteristic Leaching Procedure) for stringent evaluation. Test results show that the heavy metal leaching levels of UPuper® rockwool substrates are significantly below standard limits, ensuring long-term use without contamination risks to crops or the environment.

Additionally, the product has passed microbial testing in accordance with the European Pharmacopoeia, meeting all hygiene requirements for agricultural substrates and eliminating pathogenic microorganism risks at the source.

"Rockwool substrates come into direct contact with plant roots, making safety an uncompromisable priority for UPuper®," stated the head of UPuper®’s R&D Center. "We select high-quality natural basalt raw materials, apply high-temperature melting for complete sterilization, and implement a comprehensive quality control system from raw materials to finished products, ensuring every piece of rockwool meets the highest standards."

Beyond Safety, Designed for Optimal Cultivation
UPuper® rockwool substrates are not only safe but also feature a scientifically engineered pore structure, excellent water retention, and superior aeration, making them an ideal choice for modern cultivation. They are widely used in medical cannabis production, greenhouse tomato and cucumber farming, and other high-value crops, enhancing both yield and quality.

Looking ahead, UPuper® will continue to invest in R&D, driving advancements in cultivation substrates toward greater safety, efficiency, and sustainability. Together with growers worldwide, we are committed to shaping a greener future for agriculture.

Know more aout UPuper® rockwool,please view www.upupergrow.com.