OAK - The Liquid Tree | Removes 99.99% Dust and Produces Oxygen
The World's First Advanced Air Purification System That Produces Oxygen
OAK The Liquid Tree combines cutting-edge True HEPA filtration with living microalgae technology to deliver unprecedented air purification performance. This revolutionary dual-system approach removes 99.99% of dust, allergens, and pollutants while actively generating fresh oxygen—equivalent to one mature oak tree.
Dual-Technology Air Purification
Experience the power of nature and science working together. Our integrated True HEPA filter captures microscopic particles with 99.99% efficiency, while living microalgae continuously absorb CO₂ and produce oxygen, creating the healthiest indoor environment possible.
Real-Time Air Quality Monitoring
Stay informed with the built-in live AQI sensor that provides instant feedback on your indoor air quality. Monitor improvements in real-time as OAK transforms your space, giving you peace of mind and measurable results.
High-Efficiency Purification for Large Spaces
Engineered for spaces of 800–1,000 sq ft, OAK Liquid Tree delivers professional-grade air purification suitable for:
- Healthcare Facilities: Support patient recovery and reduce airborne pathogens with hospital-grade filtration and oxygen enrichment
- Corporate Offices: Boost employee wellness, focus, and productivity by up to 20% with superior air quality
- Large Living Rooms & Homes: Create a healthier sanctuary for your family with continuous purification and oxygen generation
- Educational Institutions: Improve student concentration and learning outcomes in classrooms and common areas
- Public Spaces: Demonstrate environmental leadership while protecting visitors and staff
Proven Performance Benefits
- 99.99% dust removal with True HEPA filtration technology
- Produces 3kg of fresh oxygen monthly—equivalent to one mature oak tree
- Live AQI sensor for real-time air quality monitoring
- Removes CO₂, VOCs, PM2.5, allergens, and airborne pollutants continuously
- Up to 30% reduction in indoor CO₂ in open spaces of 800–1,000 sq ft — and 78.1% in sealed-chamber testing
- Reduces sick building syndrome symptoms and employee sick days
- Sustainable alternative to traditional HVAC systems with a lower carbon footprint
- Stunning biophilic design that enhances any interior space
Technical Specifications for Liquid Tree
- Height: 150cm (59 inches)
- Diameter: 30cm (12 inches)
- Weight: 45kg without water (99 lbs)
- Power Consumption: 91W (True HEPA mode) | 50W (Standard mode)
- Oxygen Production: 3kg per month
- Coverage Area: 800–1,000 sq ft with high-efficiency purification
- Filtration: True HEPA + Living Microalgae Technology
- Monitoring: Live AQI sensor with real-time display
Perfect for ESG & Sustainability Goals
OAK The Liquid Tree is more than an air purifier—it's a visible commitment to environmental responsibility and human wellbeing. This world-first technology helps organizations meet ESG targets while creating measurably healthier indoor environments.
Smoke-Chamber Test Results — Verified Performance
We sealed a room of 20–30 m³, taped every gap and vent, then filled it with smoke and CO₂ until every sensor read its maximum. Six runs plus controls, with dual sensors logging PM2.5, PM10, CO₂, formaldehyde, benzene, TVOC, AQI, temperature and humidity roughly every five seconds. Tested 3 July 2026.
| Pollutant | Peak (smoke) | After OAK | Reduction | Clean-air guideline |
|---|---|---|---|---|
| PM2.5 | 999 µg/m³ | 13 µg/m³ | −98.7% | < 35 (WHO) |
| PM10 | 999 µg/m³ | 18 µg/m³ | −98.2% | < 45 |
| Formaldehyde | 0.374 mg/m³ | 0.008 mg/m³ | −97.9% | < 0.10 |
| TVOC | 0.94 mg/m³ | 0.03 mg/m³ | −97.1% | < 0.50 |
| AQI | 500 | 16 | −96.8% | < 50 (Good) |
| CO₂ | 2,016 ppm | 441 ppm | −78.1% | < 800 |
Roughly eleven minutes from ignition to clean air — and about three minutes once the smoke source stopped. In the control run with the OAK switched off, the identical smoke load stayed pinned at the sensor ceiling for the entire test. Smoke does not clear on its own in a sealed room.
Why the Algae Matters
A HEPA filter traps particles. It cannot remove CO₂. The OAK's living algae bioreactor can, and the test runs separate the two jobs cleanly:
- Algae only (bubbler on, fan off, no smoke): CO₂ drawn down to 463 ppm while particle levels stayed flat.
- No device, elevated CO₂: CO₂ held at around 2,100 ppm with no drawdown at all.
- Full unit under smoke load: particles fell almost vertically as the HEPA stage caught up, while CO₂ and combustion gases declined steadily throughout — two engines working in parallel, each on the pollutants it is built for.
High indoor CO₂ on its own is linked to measurable drops in focus and cognitive performance. Most air purifiers simply recirculate the same stale, CO₂-heavy air.
Chamber Results vs. Real Rooms
The figures above come from a sealed chamber, deliberately loaded far beyond anything a real room would see. That is what makes the mechanism visible — but a real room is a different problem. In an open space of roughly 800–1,000 sq ft, with normal air exchange and occupancy, expect up to 30% reduction in indoor CO₂. Both numbers are real; they describe different conditions, and we would rather show you both than quote only the flattering one.
About these figures: several sensors saturate at their ceilings (PM2.5 at ~999 µg/m³, CO₂ at 5,000 ppm), so the real smoke load was higher than the peaks shown and the reductions above are conservative. The 99.99% figure quoted elsewhere on this page is the True HEPA media's particle-capture efficiency; the 98.7% above is the measured fall in room air. Full raw sensor logs are available on request.
