Clear Caps
Unique Biodegradable Heavy Metal Remover filter
Most filtered water bottles focus on improving taste or reducing microbes, while heavy-metal performance is often unclear or difficult for customers to compare. Although some brands mention heavy-metal reduction, testing methods and results are rarely presented in a simple, transparent way. ClearCap is uniquely designed for portable heavy-metal reduction—specifically targeting toxic chromium—using a fully biodegradable, eco-friendly filter. It is the only solution in its category that can clearly demonstrate chromium removal backed by proven lab results, validated with guidance from our LCRA lab advisor. This transparency allows customers to trust exactly what they’re buying while choosing a product that protects both human health and the environment.
Our Research
Elevated concentrations of dissolved heavy metals in drinking water represent a persistent global public health concern. While regulatory standards often limit total chromium levels, they do not consistently distinguish between chromium’s two primary oxidation states: trivalent chromium (Cr³⁺), an essential micronutrient at low concentrations, and hexavalent chromium (Cr⁶⁺), a highly toxic and carcinogenic species. Due to its high solubility, oxidative stability, and mobility in aquatic systems, Cr⁶⁺ poses significant long-term health risks even at trace concentrations, highlighting the need for improved mitigation strategies for metal-contaminated water.
This study investigates the effectiveness of low-cost, biomass-derived filtration media for the removal of dissolved metal ions from aqueous systems. For safety and experimental feasibility, copper sulfate pentahydrate (CuSO₄·5H₂O) was used as a surrogate for hexavalent chromium, as Cu²⁺ ions exhibit comparable aqueous behavior, charge density, and adsorption characteristics while avoiding the hazards associated with handling chromium compounds. Filtration media evaluated included rice husk–derived charcoal, coconut shell charcoal, green zeolite, and citrus peel biomass. Metal removal efficiency was quantified by measuring dissolved copper concentrations before and after filtration using inductively coupled plasma mass spectrometry (ICP-MS).
Our Bio-degradable Materials
Elevated concentrations of dissolved heavy metals in drinking water represent a persistent global public health concern. While regulatory standards often limit total chromium levels, they do not consistently distinguish between chromium’s two primary oxidation states: trivalent chromium (Cr³⁺), an essential micronutrient at low concentrations, and hexavalent chromium (Cr⁶⁺), a highly toxic and carcinogenic species. Due to its high solubility, oxidative stability, and mobility in aquatic systems, Cr⁶⁺ poses significant long-term health risks even at trace concentrations, highlighting the need for improved mitigation strategies for metal-contaminated water.
This study investigates the effectiveness of low-cost, biomass-derived filtration media for the removal of dissolved metal ions from aqueous systems. For safety and experimental feasibility, copper sulfate pentahydrate (CuSO₄·5H₂O) was used as a surrogate for hexavalent chromium, as Cu²⁺ ions exhibit comparable aqueous behavior, charge density, and adsorption characteristics while avoiding the hazards associated with handling chromium compounds. Filtration media evaluated included rice husk–derived charcoal, coconut shell charcoal, green zeolite, and citrus peel biomass. Metal removal efficiency was quantified by measuring dissolved copper concentrations before and after filtration using inductively coupled plasma mass spectrometry (ICP-MS).
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Our Products
Phase 1
Pilot & On-the-Go Filtration
Phase 2:
Home Filtration Systems
Phase 3:
Community & Institutional Deployment
We will focus on developing and validating compact, on-the-go filtration solutions designed to fit popular reusable water bottles. This phase will emphasize laboratory testing, prototype development, and performance validation for heavy metal reduction. Pilot users such as students, athletes, hikers, and travelers will help refine usability, flow rate, and durability while establishing early market traction.
Building on proven performance, we will expand into home-based filtration products compatible with widely used systems such as pitcher and faucet filters. This phase will prioritize affordability, extended filter lifespan, and daily-use reliability for middle-class households. Manufacturing scale-up, third-party testing, and preparation for NSF/ANSI compliance will be key milestones.
In the final phase, we will adapt our technology for larger-scale systems serving schools, clinics, community centers, and rural communities. Through partnerships with NGOs and local organizations, we will deploy need-based solutions in underserved areas. This phase will focus on scalability, durability, and long-term impact, enabling broad access to safe drinking water and advancing public health equity.
Most filtered water bottles focus on improving taste or reducing microbes, while heavy-metal performance is often unclear or difficult for customers to compare. Although some brands mention heavy-metal reduction, testing methods and results are rarely presented in a simple, transparent way. ClearCap is uniquely designed for portable heavy-metal reduction—specifically targeting toxic chromium—using a fully biodegradable, eco-friendly filter. It is the only solution in its category that can clearly demonstrate chromium removal backed by proven lab results, validated with guidance from our LCRA lab advisor. This transparency allows customers to trust exactly what they’re buying while choosing a product that protects both human health and the environment.