Mineral Gem® Calcium & Magnesium Mineralization Media

A Stable, Customizable Solution for Coffee and Tea Water

Water is the foundation of coffee and tea flavor. While pure water is clean, its lack of minerals can lead to under-extraction, 

resulting in weak coffee and thin tea. Tap water, meanwhile, has unpredictable hardness, which can cause scale buildup and 

equipment damage, while also introducing bitterness and unwanted flavors.

In overseas water filtration and coffee equipment markets, calcium and magnesium slow-release mineralization media have 

become key functional materials for coffee machine and water filter cartridges. ETERNAL WORLD’s Mineral Gem® calcium 

and magnesium ion mineralization media has earned an Aquatech international industry award and holds two core invention 

patents. Powered by proprietary P-LSR natural mineral purification and slow-release technology, it is already used in volume 

production of overseas coffee machine and water filter cartridges, delivering stable, controllable improvements in coffee and 

tea flavor.

Core Technology: P-LSR Natural Mineral Purification & Slow-Release Technology

Mineral Gem® calcium and magnesium media were jointly developed by Shandong ETERNAL WORLD New Material Industrial 

Co., Ltd. and universities and research institutes, including China University of Mining and Technology.

Unlike conventional mineral media, which may contain complex compositions and release minerals inconsistently, P-LSR 

technology uses targeted purification of natural minerals to remove impurities and heavy metals, obtaining high-purity 

calcium and magnesium mineral components.

A gradient-controlled, nano-microporous sintering process then locks these beneficial minerals into the ceramic lattice. 

Through interconnected microporous channels, calcium and magnesium ions are released gradually, evenly, and controllably 

over time.

This helps prevent excessive initial release followed by rapid depletion, while adapting to the dynamic flow conditions of filter 

cartridges and maintaining stable water quality throughout the product’s service life.

Two Invention Patents: Strong Technical Validation

Magnesium-Rich Slow-Release Mineralization Material and Preparation Method

This invention addresses the challenge of stable magnesium-ion release, enabling precise control of magnesium dissolution 

levels.

Magnesium ions can promote the extraction of coffee organic acids and floral compounds, helping to soften bitterness, 

enhance sweetness, and improve crema quality. Magnesium salts are also less prone to forming hard scale at high 

temperatures, supporting both flavor performance and coffee machine protection.

Slow-Release Mineralization Material Capable of Releasing Alkaline, Strontium & Selenium Elements and Preparation Method

This invention supports multi-element formulations combining calcium, magnesium, strontium, and other minerals. It enables 

flexible adjustment of TDS, hardness, and alkalinity to meet different water quality requirements for espresso machines, 

drip coffee, and various tea brewing applications.

The material can be used for post-RO remineralization or directly incorporated into water filter cartridges for mineralizationmodification.

Aquatech International Award: Recognized by the Global Water Treatment Industry

Mineral Gem® mineralization media earned the Best Residential Water Product Award at Aquatech for its original mineralization 

technology and practical application value.

As one of the world’s most influential professional water treatment exhibitions, Aquatech places emphasis on technological originality, 

practical application, and sustainability.

This recognition demonstrates the international water treatment industry’s acknowledgment of Mineral Gem® mineralization technology 

and provides a strong foundation of technical credibility for its application in overseas coffee machine and water filter products.

Proven Overseas Applications: Coffee Machine & Water Filter Cartridges

Mineral Gem® calcium and magnesium ion mineralization media are already used in volume production for overseas markets, including:

Water tank cartridges for fully automatic coffee machines

Post-mineralization cartridges for espresso machines

Cartridges for household gravity-fed water filter pitchers

Coffee Applications

Controlled release of calcium and magnesium ions helps establish a balanced water quality range for coffee, enhancing the floral and fruity notes 

of light-roasted beans, balancing bitterness, and improving sweetness.

Compared with ion exchange resins, the media do not introduce sodium ions. They also help reduce the formation of hard 

scale, supporting the protection of coffee machine boilers and internal water lines.

Tea Applications

By optimizing water hardness, the media help reduce excessive oxidation of tea polyphenols, resulting in clearer, brighter tea 

liquor and a longer-lasting aftertaste, while helping avoid the astringency associated with hard water.

Compatible with Multiple Cartridge Designs

The media can be:

Filled into dedicated mineralization cartridges

Combined with activated carbon to create composite filter cartridges

Adapted to water tank, inline, and gravity-fed filter pitcher structures

Customized Technical Services for Filter Cartridge Manufacturers

ETERNAL WORLD provides more than standardized mineral media granules. We also offer complete technical support for 

filter cartridge manufacturers.

By providing basic parameters such as cartridge volume, target water throughput, actual flow rate, and target calcium and 

magnesium levels, customers can receive:

Customized media selection

Scientifically designed multi-component formulation solutions

ICP-OES elemental testing and other testing support

This helps customers accelerate new product development, validation, and commercialization, while significantly reducing 

R&D trial-and-error costs for end-use filter cartridge products.

A Reliable Mineralization Solution for Global Coffee & Water Filter Brands

Backed by patented materials, P-LSR slow-release technology, international award recognition, and comprehensive testing 

and formulation services, Mineral Gem® calcium and magnesium ion mineralization media provide global coffee machine 

and water filter brands with high-stability, customizable mineralization material solutions.