Hydrogen Water Glossary | Key Terms & Definitions
Welcome to the PUREPEBRIX Hydrogen Water Glossary — your comprehensive reference guide to the science and technology behind hydrogen-rich water. Whether you are new to molecular hydrogen or looking to deepen your understanding, this glossary explains every key term you will encounter when exploring our hydrogen water products and technology.
Antioxidant
A substance that neutralizes free radicals by donating electrons, thereby preventing them from causing cellular damage. Molecular hydrogen (H2) is considered one of the most effective antioxidants due to its incredibly small size, which allows it to penetrate cell membranes and reach the mitochondria. Unlike many conventional antioxidants, H2 selectively targets only the most harmful free radicals, such as hydroxyl radicals, without disrupting beneficial reactive oxygen species.
↑ Back to topBorosilicate Glass
A type of heat-resistant glass made with silica and boron trioxide, known for its exceptional durability and resistance to thermal shock. PUREPEBRIX uses borosilicate glass in the L100 and X100 hydrogen water bottles, ensuring a chemical-free, taste-neutral container that will not leach harmful substances into your water. Borosilicate glass is the preferred material for laboratory and medical-grade applications, making it the ideal choice for premium hydrogen water devices.
↑ Back to topDissolved Hydrogen (DH)
Hydrogen gas (H2) that has been dissolved into water at the molecular level, measured in parts per billion (PPB) or parts per million (PPM). For hydrogen water to deliver meaningful therapeutic benefits, the dissolved hydrogen concentration should exceed 1000 PPB. PUREPEBRIX devices achieve high DH levels through advanced SPE/PEM electrolysis technology, consistently reaching 1400+ PPB per cycle.
↑ Back to topElectrolysis
The process of using an electrical current to split water molecules (H2O) into hydrogen gas (H2) and oxygen gas (O2). In hydrogen water generators, electrolysis is performed using platinum-coated titanium electrodes and an SPE/PEM membrane to produce pure, dissolved molecular hydrogen. This electrochemical process is the core technology behind all PUREPEBRIX devices.
↑ Back to topFree Radicals
Unstable molecules with unpaired electrons that cause oxidative damage to cells, proteins, and DNA. Free radicals are generated through normal metabolic processes as well as environmental toxins, UV radiation, pollution, and chronic stress. Molecular hydrogen selectively neutralizes the most cytotoxic free radicals — particularly the hydroxyl radical — without disrupting the beneficial reactive oxygen species your body needs for immune function and cell signaling. Reducing excess free radicals helps combat oxidative stress.
↑ Back to topH2 Analytics
An independent laboratory specializing in testing and verifying dissolved hydrogen concentration levels in water and hydrogen water devices. H2 Analytics provides third-party validation to ensure hydrogen water generators meet their advertised PPB output claims. PUREPEBRIX products are tested by H2 Analytics to verify performance and provide customers with transparent, verified results. See our certifications page for detailed test reports.
↑ Back to topHydrogen-Rich Water
Water that has been infused with additional dissolved molecular hydrogen (H2) well beyond the trace amounts found in regular tap or bottled water. High-quality hydrogen-rich water contains concentrations above 1000 PPB, providing antioxidant and anti-inflammatory benefits supported by over 1,000 peer-reviewed scientific studies. PUREPEBRIX hydrogen water bottles generate fresh hydrogen-rich water on demand in just minutes.
↑ Back to topIHSA (International Hydrogen Standards Association)
A certification body that establishes quality and performance standards for hydrogen water products and devices worldwide. IHSA certification verifies that a hydrogen water generator meets minimum requirements for dissolved hydrogen output, electrical safety, and build quality. PUREPEBRIX devices hold IHSA certification, demonstrating compliance with rigorous international standards for hydrogen water technology.
↑ Back to topMolecular Hydrogen (H2)
The smallest and lightest molecule in existence, consisting of two hydrogen atoms bonded together. H2 acts as a powerful selective antioxidant that can penetrate cell membranes, cross the blood-brain barrier, and enter the mitochondria — areas most other antioxidants cannot reach. Over 1,000 peer-reviewed studies have explored its therapeutic potential for reducing oxidative stress and inflammation. Learn more about the science on our technology page.
↑ Back to topORP (Oxidation-Reduction Potential)
A measurement expressed in millivolts (mV) that indicates a liquid's capacity to oxidize or reduce other substances. A negative ORP value indicates strong antioxidant properties, while a positive value indicates oxidizing potential. High-quality hydrogen-rich water produced by PUREPEBRIX devices typically registers ORP values between -400 mV and -600 mV, signaling potent antioxidant activity.
↑ Back to topOxidative Stress
A physiological condition that occurs when there is an imbalance between free radical production and the body's ability to neutralize them with antioxidants. Chronic oxidative stress is linked to accelerated aging, systemic inflammation, and numerous health conditions including cardiovascular disease and neurodegenerative disorders. Drinking hydrogen-rich water may help restore this balance by providing a highly bioavailable source of molecular hydrogen.
↑ Back to topPEM (Proton Exchange Membrane)
A selective semi-permeable membrane used in hydrogen water generators that allows hydrogen protons to pass through while effectively blocking oxygen, ozone (O3), and chlorine. PEM technology ensures that only pure molecular hydrogen is dissolved into your drinking water, while harmful byproducts are diverted through the waste gas exhaust. PUREPEBRIX devices use medical-grade PEM membranes paired with SPE technology for maximum purity and safety.
↑ Back to topPlatinum-Coated Titanium Electrodes
High-grade electrode plates made from a titanium substrate with a platinum coating, used in premium hydrogen water generators to facilitate efficient and durable electrolysis. Platinum-coated titanium is highly resistant to corrosion and ensures consistent hydrogen production over thousands of operating cycles. PUREPEBRIX devices feature these medical-grade electrodes for reliable, long-term performance — a significant quality advantage over devices using cheaper stainless steel or uncoated plates.
↑ Back to topPPB (Parts Per Billion)
The standard unit of measurement for dissolved hydrogen concentration in water. One PPB represents one part hydrogen per one billion parts water, offering a precise way to quantify hydrogen levels. PUREPEBRIX devices achieve concentrations of 1400+ PPB, well above the therapeutic threshold of 1000 PPB recommended by leading hydrogen researchers. Always look for PPB readings when comparing hydrogen water generators.
↑ Back to topPPM (Parts Per Million)
An older and broader unit of measurement for dissolved gas concentration, where 1 PPM equals 1,000 PPB. While PPM is still widely used in general water chemistry, PPB provides a more precise and granular measurement for dissolved hydrogen levels. For reference, the therapeutic threshold of 1000 PPB is equivalent to 1.0 PPM. When evaluating hydrogen water devices, check whether claims are listed in PPM or PPB to make accurate comparisons.
↑ Back to topSaturation
The maximum amount of hydrogen gas that can be dissolved in water under given conditions of temperature and pressure. At standard atmospheric pressure and room temperature (25°C), water reaches hydrogen saturation at approximately 1600 PPB (1.6 PPM). Factors such as colder water temperature, higher atmospheric pressure, and extended electrolysis duration can influence the achievable saturation level.
↑ Back to topSelf-Cleaning Mode
An automatic maintenance cycle built into advanced hydrogen water generators that reverses the polarity of the electrodes to remove mineral scale and deposits from the electrode plates and PEM membrane. Regular self-cleaning extends the lifespan of the device and maintains optimal hydrogen output over time. PUREPEBRIX devices feature an automated self-cleaning function that activates periodically, ensuring hassle-free maintenance and consistent performance.
↑ Back to topSPE (Solid Polymer Electrolyte)
A solid membrane technology used in hydrogen water generators to facilitate the electrolysis process without requiring liquid chemical electrolytes. SPE technology replaces traditional liquid electrolyte solutions with a solid polymer membrane, enabling more efficient hydrogen generation and eliminating the need for chemical additives. When paired with PEM, the SPE/PEM system represents the gold standard in hydrogen water production — a key feature of all PUREPEBRIX devices.
↑ Back to topTherapeutic Concentration
The minimum dissolved hydrogen level in water required to provide measurable health benefits, generally recognized as above 1000 PPB (1.0 PPM). Research published in peer-reviewed journals suggests that concentrations at or above this threshold offer meaningful antioxidant and anti-inflammatory effects. PUREPEBRIX devices are engineered to consistently exceed this benchmark, delivering 1400+ PPB in each generation cycle.
↑ Back to topWaste Gas Exhaust
A venting system in SPE/PEM hydrogen water generators that safely separates and expels unwanted byproducts — such as ozone (O3) and chlorine — generated during electrolysis. This dedicated exhaust channel ensures that only pure dissolved hydrogen enters your drinking water, a critical safety and quality feature. PUREPEBRIX devices incorporate a purpose-built waste gas exhaust for maximum water purity.
↑ Back to topReady to Experience Hydrogen-Rich Water?
Explore PUREPEBRIX hydrogen water bottles featuring SPE/PEM technology, platinum-coated titanium electrodes, and 1400+ PPB output.
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