Velta Guides
Water, air and hydrogen, explained.
Choose one subject and begin with the fundamentals. Each hub keeps its articles, practical answers and videos together, so you always know where to look.
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Start with water, air or hydrogen. The Classroom brings the available Velta films together separately.
01 · water
Water guides
Reverse osmosis, PFAS, microplastics, minerals, Singapore water context and purifier care.
02 · air
Air guides
PM2.5, formaldehyde, VOCs, mould, humidity, allergens and air-purifier fundamentals.
03 · hydrogen
Hydrogen guides
Oxidative stress, free radicals, antioxidants, hydrogen water, research history, source papers and practical FAQs.
Velta Video Classroom
Prefer to watch?
Watch the reviewed hydrogen biology excerpts, then read the paired guides. Water, air, scent and hydrogen product films show the appliances in use in their own sections.
Browse all 41 articles
Water Purification
Does RO Water Remove Minerals?
Understand mineral reduction, taste and nutrition without confusing a TDS reading with safety.
Read the guideHydrogen
Eating Out and Everyday Food Choices
Keep the pleasure of eating out while assessing dietary patterns and avoiding unsupported “protective” product claims.
Read the guideAir Purification
Formaldehyde and VOCs in the Home
Where indoor gases may come from, when ventilation and source control matter, and why a particle filter alone cannot remove them.
Read the guideHydrogen
A Short History of Molecular Hydrogen Research
From early high-pressure diving research to a landmark 2007 laboratory paper and today’s varied human studies.
Read the guideAir Purification
How to Choose an Air Purifier for Your Singapore Home
Compare room size, clean air delivery, sensor readings and upkeep. Understand what an air purifier can do for particles, and why damp and odours need separate attention.
Read the guideHydrogen
Hydrogen Inhalation and Hydrogen Water: Different Research Routes
Understand delivery-route differences without treating clinical gas research as evidence for a water appliance.
Read the guideHydrogen
Molecular Hydrogen Research Library: 17 Areas of Investigation
Explore the same 17 research topics as Velta Malaysia, with source links, evidence types and the limits of applying findings to Hhuhu.
Read the guideHydrogen
Hydrogen Water FAQ: Measurements, Source Water and Care
Practical answers about Hhuhu, hydrogen-water research and model-specific ownership.
Read the guideHydrogen
Immune Function and Oxidative Stress
Understand normal immune responses and the difference between a biological marker and a proven health outcome.
Read the guideWater Purification
Microplastics in Drinking Water: What Do We Know?
Why small plastic particles are found in tap and bottled water, what current evidence can and cannot establish, and how treatment affects them.
Read the guideHydrogen
Mitochondria and Cellular Energy
Understand ATP, mitochondrial function and the limits of a “cellular energy” product headline.
Read the guideAir Purification
Mould and Dampness at Home
How to trace moisture, dry wet materials, approach cleanup and understand the limited supporting role of an air purifier.
Read the guideHydrogen
The 2007 Nature Medicine Hydrogen Study: What It Tested
Read the landmark chemical, cell and animal work without presenting it as proof of a Hhuhu health benefit.
Read the guideAir Purification
PM2.5 and Haze in Singapore
Understand PM2.5, Singapore’s PSI and one-hour readings, and what room filtration can and cannot do.
Read the guideAir Purification
Pollen, Pet Dander and Household Dust
Where common allergens come from, why they settle and return to the air, and how cleaning, source management and filtration work together.
Read the guideHydrogen
Sleep, Recovery and Cellular Balance
Start with established sleep foundations, then assess hydrogen research without assuming a product improves sleep.
Read the guideWater Purification
Boiled, Mineral, RO, Alkaline or Hydrogen-Rich Water?
Compare five water categories by treatment, composition and purpose rather than one “healthiest water” headline.
Read the guideHydrogen
Vitamin C and Antioxidant Systems
Understand an essential nutrient’s role without treating hydrogen as a substitute for vitamins or food.
Read the guideAir Purification
Washable Electrostatic vs HEPA Air Purifiers
Both can capture airborne particles. The important differences are how they hold those particles, how airflow changes as material accumulates and whether ownership means washing a collector or replacing a filter.
Read the guideHydrogen
What Are Antioxidants?
Understand antioxidant systems, normal reactive molecules and why a mechanism is not a consumer-product benefit.
Read the guideHydrogen
What Are Free Radicals?
Learn what reactive molecules do, how oxidative stress differs, and why exposure cannot diagnose a health condition.
Read the guideWater Purification
What Are PFAS in Drinking Water?
What these persistent chemicals are, why a detected amount needs context and how to check whether an exact home treatment system has a verified reduction claim.
Read the guideAir Purification
What a Dehumidifier Does
How to measure indoor humidity, choose where dehumidification helps and understand the difference between removing moisture and filtering particles.
Read the guideHydrogen
What Is Apoptosis? Programmed Cell Death Explained
Understand the term apoptosis and distinguish a normal biological process from an unproven promise about a consumer hydrogen-water machine.
Read the guideHydrogen
What Is Inflammation? Acute and Persistent Responses
A plain explanation of inflammation and why a discussion of biology cannot establish a treatment benefit from hydrogen water.
Read the guideHydrogen
What Is Oxidative Stress? Understanding the Research Term
Understand free radicals, antioxidant balance and why a biological mechanism does not prove a benefit from a hydrogen-water machine.
Read the guideWater Purification
How Do I Know My Water Purifier Is Working?
Use TDS readings, filter-life reminders and what you notice day to day to tell whether your RO purifier is doing its job.
Read the guideWater Purification
Water Filters in Singapore: Every Type Compared (2026)
Compare pitcher, faucet, countertop, under-sink and whole-home filters by treatment method, installation, upkeep and Singapore pricing.
Read the guideWater Purification
Why Does the HydroSpark+ Have a Divider in the Tank?
The small divider inside your HydroSpark+ tank looks like it does nothing — but it's central to how the system recirculates water in tank mode instead of sending residual water down a drain.
Read the guideWater Purification
What Is Reverse Osmosis? How RO Water Filters Work
A practical explanation of reverse osmosis membranes, certified contaminant claims, wastewater, maintenance, minerals, and whether RO is useful in Singapore.
Read the guideWater Quality
Water Dispenser vs Water Purifier: Functions, Costs and Installation
Compare hot and cold water, filtration, purchase or subscription costs, installation and upkeep for Singapore homes.
Read the guideHydrogen
Alkaline Water vs Hydrogen Water: What's the Difference?
Compare alkaline and hydrogen water: how each is made, what pH and dissolved H2 measure, what the human studies show, and where the evidence is still thin.
Read the guideSparkling Water
Best Sparkling Water Makers in Singapore: 6 Compared (2026)
Compare six sparkling water makers in Singapore by price, best-case CO2 cost per litre, local cylinder exchange, countertop space and filtration.
Read the guideSparkling Water
How to Make Sparkling Water at Home in Singapore
Compare countertop carbonators, soda siphons and combined purifier-carbonator systems by setup, CO2 format, cost and safety.
Read the guideSparkling Water
Is Carbonated Water Good for You? Evidence and Practical Advice
What research and health guidance say about plain carbonated water, hydration, teeth, digestion and bone health.
Read the guideSparkling Water
SodaStream vs HydroSpark+: Which Fits Your Singapore Home?
Compare SodaStream and Velta HydroSpark+ by current Singapore price, footprint, filtration, water temperatures, CO2 system and upkeep.
Read the guideSparkling Water
Sparkling Water vs Soda Water vs Seltzer vs Club Soda vs Tonic Water: What's the Difference?
A clear breakdown of every type of carbonated water. What's in each one, which is healthiest, and which to use for drinks, cooking, and daily hydration.
Read the guideSparkling Water
What Is a Sparkling Water Purifier? Filtration and Carbonation
How sparkling water purifiers filter and carbonate water, which homes they suit, and how they compare with separate appliances.
Read the guideWater Purification
How to Choose a Water Filter or Purifier for Your Singapore Home
Which water filter or purifier actually suits an HDB, BTO or condo kitchen: the treatment you need, countertop or under-sink, filter costs and a six-question shortlist.
Read the guideWater Quality
Is Singapore Tap Water Safe? What PUB's 500,000 Tests Show
How PUB monitors Singapore's drinking water, what its published results show, and what to do about chlorine taste or unusual water at one tap.
Read the guideHydrogen
What Is Hydrogen Water? Evidence, Safety and Buyer Checklist
What dissolved H2 means, what human studies report, what is still uncertain, and how to compare hydrogen-water generators.
Read the guide