H2HUBB and H2 Analytics: Different Roles That Can Work Together
I am often asked whether a hydrogen-product company should pursue H2HUBB evaluation or H2 Analytics certification—and whether obtaining both would be redundant. My answer is that there is some overlap in what we measure, but the two pathways are designed to accomplish different things.
H2 Analytics primarily provides laboratory testing and formal standards-compliance certification for hydrogen-water products. H2HUBB provides independent product evaluation, research-informed performance qualification, consumer-facing approval, and marketplace visibility across a much broader range of hydrogen-product categories.
I have a great deal of respect for what H2 Analytics does, and H2HUBB has used H2 Analytics ourselves when gas-chromatography confirmation is appropriate. I do not view their work and ours as competing systems where a company has to choose one or the other. For the right hydrogen-water product, I think the strongest position can be to pursue both.
H2HUBB Takeaway
- IHSA establishes standards; H2 Analytics is an IHSA-authorized U.S. certifying/testing entity. For hydrogen-water products, H2 Analytics uses gas chromatography and applicable water-quality and safety testing to determine compliance with IHSA standards.
- The H2 Analytics certification currently applies to hydrogen drinking-water products. H2 Analytics can test other hydrogen-product categories, but IHSA has not yet established certification standards for those categories.
- H2HUBB evaluates products differently. We look beyond minimum compliance to assess real-world hydrogen performance, dose, repeatability, category-specific safety considerations, function, and whether the product meets the standards we use before recommending it.
- H2HUBB evaluates multiple hydrogen categories. That includes hydrogen water, hydrogen tablets, inhalation systems, bath products, and other hydrogen technologies using category-specific methods.
- Gas chromatography and the Unisense H₂ Microsensor are complementary tools. GC is extremely valuable for formal laboratory confirmation and certification; the Unisense system lets us observe dissolved H₂ directly and continuously during actual product operation.
- The biggest difference comes after testing. H2 Analytics verifies compliance. H2HUBB can then place an approved product into a qualified consumer marketplace, publish the test results and review, and help consumers discover the product.
In This Article
- The Quick Answer
- What IHSA & H2 Analytics Do
- What H2HUBB Does
- Side-by-Side Comparison
- Testing Methods & Equipment
- GC vs. Unisense H₂ Microsensor
- Advanced Unisense H₂ Microsensor Testing
- Why Both Can Be Valuable
- How H2HUBB Uses H2 Analytics/IHSA Documentation
- What This Means for Manufacturers
- What This Means for Consumers
The Quick Answer: Compliance Certification and Product Qualification Are Not the Same Thing
I think the easiest way to understand the difference is to start with the question each pathway is designed to answer.
Does the Product Meet the Applicable Certification Standard?
For a hydrogen-water product, H2 Analytics evaluates the product against the applicable IHSA certification requirements using approved laboratory methods. If the product complies, the manufacturer can receive a Certificate of Compliance, H2 Analytics certification seal, and associated reports.
How Well Does the Product Perform—and Would We Recommend It?
H2HUBB evaluates measured hydrogen performance, dose, repeatability, category-specific safety considerations, product function, and practical use. If it meets our standards, we approve it for recommendation and marketplace placement.
There is overlap because both organizations may measure dissolved H₂, look at contaminants, and assess certain safety-related criteria. But the end goal is different. One is primarily a formal standards-compliance pathway. The other is a consumer qualification, approval, and marketplace pathway built around real product performance.
What IHSA and H2 Analytics Provide
The International Hydrogen Standards Association (IHSA) establishes performance and certification standards for molecular-hydrogen products. IHSA does not directly issue product certifications; it authorizes certifying entities to do so under IHSA criteria. H2 Analytics is listed by IHSA as an authorized U.S. certifying entity.
At this time, IHSA has established certification standards for hydrogen drinking-water products. H2 Analytics can perform testing on other categories—including inhalation devices, bathing devices, and other H₂-related products—but those products are not currently eligible for IHSA certification because IHSA standards have not yet been established for those categories.
For hydrogen-water products, the H2 Analytics certification program can include:
- Dissolved molecular hydrogen measurement by gas chromatography (GC)
- Water-quality testing through a third-party EPA-certified laboratory that includes heavy metals and PFAS
- pH and change-in-pH evaluation
- Chlorine and ozone testing
- Chlorine-removal testing when an internal filter is present
- Pressure-relief evaluation for applicable pressurized products
- Shelf-life testing for prepackaged hydrogen beverages
- Packaging, labeling, and marketing-claim review
Under H2 Analytics’ current published certification program, most hydrogen-water generating products must demonstrate at least 0.5 mg/L of dissolved H₂. Prepackaged hydrogen beverages have a higher 1.0 mg/L minimum under the current protocol, along with dose-related requirements.
What I Think H2 Analytics Does Very Well
It gives a manufacturer a formal, laboratory-based way to demonstrate that a hydrogen-water product complies with an established set of standards. That is valuable for manufacturers, distributors, clinics, and consumers who want independent documentation rather than relying only on the company’s own performance claims.
Review the H2 Analytics IHSA Certification Program →
What H2HUBB Provides
H2HUBB is built for a different purpose. We are a qualified hydrogen marketplace supported by an evaluation wing and a promotion wing.
Our evaluation is designed to answer whether a hydrogen product delivers meaningful H₂ performance within its category, operates properly under real-world conditions, addresses important safety considerations, and whether we are comfortable recommending it to consumers.
We do not force every hydrogen product into one universal standard. Our standards are category-specific because a portable hydrogen-water bottle, a high-volume hydrogen infusion machine, an inhalation system, and a hydrogen bath product do not deliver H₂ the same way.
Depending on product category, H2HUBB evaluation may include:
- Dissolved H₂ concentration
- Total milligram dose of H₂ delivered
- Average, peak, and repeat-cycle performance
- Manufacturer performance-claim verification
- Chlorine and ozone contamination testing
- pH testing
- Product design and hydrogen-generation technology
- Pressure management and safety mechanisms
- Product functionality and practical real-world use
- Hydrogen gas flow and output for inhalation systems
- Gas-volume verification
- Electrolysis monitoring where appropriate
- Filtration, electrolyte containment, and other category-specific safety features
For several hydrogen-water categories, H2HUBB uses 0.8 mg/L as a minimum dissolved-H₂ performance benchmark, while portable products are also evaluated according to whether they can provide approximately 0.8 mg of H₂ within a practical daily serving pattern. Other product categories have different standards because their delivery methods differ.
Read the H2HUBB Standards Framework →
Review H2HUBB Product Performance Standards →
H2HUBB vs. H2 Analytics: Side-by-Side
| Area | H2 Analytics | H2HUBB |
|---|---|---|
| Primary Role | Standards-compliance testing and certification for eligible hydrogen-water products. | Independent product evaluation, approval, consumer guidance, and marketplace visibility. |
| Current Certification Scope | IHSA certification standards currently apply to hydrogen drinking-water products. H2 Analytics can test other product types even when IHSA certification standards are not available. | Category-specific evaluation across hydrogen water, tablets, inhalation, bath products, and other hydrogen technologies. |
| Dissolved H₂ Measurement | Gas chromatography; GC is currently the only IHSA-authorized certification method. | Custom Unisense H₂ Microsensor, H2Blue titration when appropriate, and GC confirmation through H2 Analytics when warranted. |
| Water Quality | Third-party EPA-certified laboratory analysis as part of applicable certification testing. | Category-appropriate contamination screening, including chlorine and ozone testing, plus review of design features intended to limit unwanted byproducts. |
| Performance Philosophy | Does the product comply with the applicable minimum certification requirements? | How well does the product perform relative to research-informed H2HUBB standards and real-world consumer use? |
| Product Function | Certification focuses on the applicable standards and testing protocol. | Evaluation can include functionality, repeatability, cycle behavior, real-world use, engineering design, and category-specific practical considerations. |
| Consumer Recommendation | H2 Analytics states that it does not recommend products; certification status can be verified on their website. | Approved products are products H2HUBB is willing to recommend within its qualified marketplace. |
| After Testing | Certification documentation, laboratory reports, and certification seal when applicable. | Approval documentation plus marketplace listing, review/test-result publication, and optional media and promotional support. |
What Each Organization Uses to Test Hydrogen Products
Laboratory & Compliance Methods
- Gas chromatography for dissolved H₂
- Static-headspace GC methodology when appropriate
- Thermal conductivity detection in published GC protocols
- Third-party EPA-certified water-quality laboratory testing
- PFAS and applicable contaminant testing
- pH / ΔpH testing
- Chlorine and ozone testing
- Pressure-relief evaluation where applicable
- Shelf-life testing for prepackaged products
- Packaging, labeling, and marketing-claim review
Performance & Real-World Evaluation Methods
- Custom Unisense H₂ Microsensor + UniAmp amplifier
- H2Blue titration under controlled protocols
- Gas chromatography through H2 Analytics when further validation is appropriate
- Chlorine and ozone testing
- pH testing
- Total H₂ dose calculations
- Repeated-cycle and consistency testing
- Alicat hydrogen mass-flow measurement
- Gas-displacement testing
- Electrolysis voltage/amperage monitoring
- Gas-output and practical dose calculations
- Category-specific safety and functional evaluation
Gas Chromatography vs. the Unisense H₂ Microsensor
This is one of the most common technical questions I receive because H2 Analytics and H2HUBB use different primary methods when we evaluate dissolved molecular hydrogen.
I do not view this as a question of one instrument making the other unnecessary. They answer different testing needs.
GC is extremely valuable for formal laboratory confirmation and certification. H2 Analytics can analyze dissolved H₂ across a wide range of sample types, including unusual matrices that may be difficult to measure with probes or reagents. Their published protocols use calibrated GC methods and replicate measurements to generate laboratory reports.
The Unisense system allows H2HUBB to measure dissolved H₂ directly and continuously in the liquid during actual product operation. Our custom configuration is designed for modern hydrogen-product concentrations up to approximately 20 mg/L.
With continuous measurement, I can watch the concentration rise, identify average and peak performance, compare repeated production cycles, examine consistency, and see how quickly H₂ begins to dissipate after production. That gives me a performance profile rather than only one endpoint measurement.
GC remains extremely useful when I want independent laboratory confirmation, when a sample matrix is difficult, or when a company is pursuing formal H2 Analytics certification. H2HUBB has used H2 Analytics for this purpose.
Unisense H₂ Microsensor — Advanced Dissolved Hydrogen Testing
H2HUBB utilizes a customized Unisense Hydrogen Microsensor with UniAmp amplifier, a laboratory-grade electrochemical micro-sensing system capable of detecting dissolved hydrogen with exceptional sensitivity and precision.
Our instrument provides real-time, high-resolution measurement of dissolved molecular hydrogen, and the H2HUBB sensor system can accurately quantify concentrations from 0.001 to 20.0 mg/L (ppm)—a measurement range far greater than that of colorimetric, ORP, or consumer-grade meters. This enables precise evaluation of both standard and high-performance supersaturated hydrogen products.
Key Technical Advantages
- Real-time quantitative measurement of dissolved hydrogen in mg/L
- Accurate measurement range of 0.001–20.0 mg/L (ppm)
- 0.02-second temporal resolution, allowing us to capture rapid changes in concentration
- Electrochemical detection at the molecular level
- No chemical reagents required, unlike titration/oxidimetry, reducing one source of testing variability
- Provides complete concentration curves, including rise time, peak concentration, decay, and stability
- Each test is calibrated using certified hydrogen gas standards to support high scientific accuracy
- Offers precision and temporal resolution approaching gas chromatography, while allowing continuous in-water measurement during actual product operation
Because of its sensitivity, stability, and real-time analytical output, the Unisense system stands as one of the most accurate and scientifically rigorous methods available in the hydrogen industry today. For H2HUBB, its greatest advantage is that I can see the entire performance curve rather than relying only on a single endpoint measurement.
The Methods Can Strengthen One Another
If a product performs well in H2HUBB’s real-time evaluation and also has independent GC documentation through H2 Analytics, the manufacturer and consumer gain two different forms of evidence. One shows what the product is doing throughout actual operation. The other provides an independent laboratory measurement under a formal testing protocol.
Learn About H2 Analytics Gas Chromatography →
Why I Think Both Forms of Third-Party Validation Can Be Valuable
For a quality hydrogen-water manufacturer, I think the strongest way to look at this is not, “Which certification should replace the other?” Instead, I would ask what each one adds.
H2 Analytics
Provides laboratory documentation that the product meets the applicable hydrogen-water certification requirements. This is useful for demonstrating standards compliance to consumers, distributors, clinics, and business partners.
H2HUBB
Shows how the product performs under H2HUBB evaluation, whether it meets our research-informed standards, and whether we are willing to approve and recommend it. Once approved, that validation is connected directly to consumer discovery through the marketplace.
A company can therefore say more than, “Our own testing shows this product works.” It may be able to show both formal compliance documentation and a separate consumer-facing independent evaluation.
That distinction matters because hydrogen products are difficult for consumers to evaluate on sight. Molecular hydrogen is colorless, odorless, and tasteless. A bottle can look impressive and still underperform. A company can advertise a large PPB number without explaining the actual dose, testing method, or repeatability. Independent documentation gives the consumer something more concrete to evaluate.
H2HUBB Already Uses H2 Analytics and Their Certification Documentation as Complementary Evidence
This is not just a theoretical relationship. The complementary nature of the two systems is already visible on H2HUBB.
We maintain a dedicated collection for hydrogen products supported by H2 Analytics certification and/or H2 Analytics testing so consumers can identify products with additional independent documentation.
Browse Independently Tested / H2 Analytics Certified Products on H2HUBB →
We also place applicable third-party documentation directly alongside our own evaluation when it is available. The Piurify Hydrogenator Bottle with Handle is a clear example: the H2HUBB product page provides both the H2HUBB Test Report and the H2 Analytics Test Report.
See the Piurify Product Page with Both Independent Reports →
This Is What Complementary Testing Looks Like
H2 Analytics can provide formal GC testing and certification documentation. H2HUBB can then incorporate that documentation into a broader product evaluation that also examines performance, dose, repeatability, safety considerations, real-world function, and whether the product qualifies for recommendation in our marketplace.
What This Means for Hydrogen-Product Manufacturers
If I were explaining the pathways to a manufacturer, I would break it down this way:
H2 Analytics is the appropriate pathway for formal certification to the applicable hydrogen-water standards.
H2HUBB evaluates how the product performs against our category-specific standards and practical consumer criteria, including real-world performance and safety considerations.
H2HUBB has established category-specific evaluation pathways beyond hydrogen drinking water. H2 Analytics can perform testing on additional H₂ products, but the H2 Analytics certification is currently limited to categories for which IHSA standards have been established.
H2HUBB’s model connects independent evaluation to marketplace placement and optional media exposure. Approved products can be reviewed, compared, and discovered by consumers already researching hydrogen products.
One important distinction is that H2HUBB’s commercial relationship with an approved company comes after the product qualifies for approval. Approval is based on the evaluation. After approval, we can establish referral links, request consumer discounts, and provide ongoing marketplace exposure so qualified products are easier for consumers to find.
Want H2HUBB to Evaluate Your Hydrogen Product?
Our approval pathways combine independent performance verification with H2HUBB approval and different levels of consumer visibility. Evaluation does not guarantee approval; products must meet the applicable H2HUBB standards.
What This Means for Consumers
For consumers, the main point is that different seals and reports can answer different questions.
An H2 Analytics Certificate of Compliance under IHSA standards tells you that the applicable hydrogen-water product was evaluated against a framework of certification standards.
An H2HUBB approval tells you that we independently evaluated the product against the category-specific performance and safety framework we use before recommending products in our marketplace.
When a product has both, I see that as a strength—not unnecessary duplication. The company has been willing to submit its product to different independent organizations using different methods and different evaluation philosophies.
I also encourage consumers to go beyond the seal itself. Look at the actual report when it is available. Ask how much H₂ was measured, what test method was used, what volume of water was tested, how much total H₂ was delivered, whether the product was tested more than once, and whether the product is being used in the way it was evaluated.
My Bottom Line
H2 Analytics and H2HUBB are complementary because they solve different problems.
H2 Analytics gives hydrogen-water manufacturers a formal laboratory and standards-compliance pathway. H2HUBB evaluates a broader range of hydrogen technologies through a research-informed, category-specific process and then connects qualified products with consumers through our marketplace.
I think the hydrogen industry benefits from both. We need strong laboratory testing and standards, and we also need independent consumer-facing evaluation that helps people understand what products actually deliver in practice.
H2HUBB, IHSA & H2 Analytics: Common Questions
Is H2HUBB the same thing as IHSA certification?
No. IHSA establishes performance standards and authorizes certifying entities such as H2 Analytics. H2HUBB operates its own independent product-evaluation, approval, and marketplace framework.
Does H2 Analytics only test hydrogen water?
No. H2 Analytics states that it can test other hydrogen-product categories. However, the H2 Analytics certification currently applies only to hydrogen drinking-water products because IHSA has not yet established performance standards for the other categories.
What is the IHSA minimum hydrogen concentration?
Under H2 Analytics’ current published certification program, most hydrogen-water generating products must produce at least 0.5 mg/L of dissolved H₂. Prepackaged hydrogen beverages have a 1.0 mg/L minimum under the current program, along with applicable dose requirements.
Why does H2HUBB use the Unisense H₂ Microsensor instead of only gas chromatography?
The Unisense system allows us to measure dissolved H₂ directly and continuously during actual product operation. That lets us evaluate how concentration changes over time, average and peak output, consistency, repeated cycles, and dissipation. Our customized system measures approximately 0.001–20.0 mg/L with 0.02-second temporal resolution. GC remains valuable for independent laboratory confirmation and certification.
Can a product have both H2HUBB approval and H2 Analytics certification documentation?
Yes. H2HUBB already features products with both forms of independent documentation. When applicable, we can display H2 Analytics reports alongside H2HUBB test results on product approval pages.
Does H2 Analytics recommend certified products?
H2 Analytics states that it does not recommend products or publish a list of certified products; consumers can verify a product’s certification status by visiting H2 Analytics’ certification verification page or by contacting the laboratory. H2HUBB, by contrast, is structured as a qualified marketplace and recommends products that successfully complete our evaluation process.
Which is better: H2HUBB or H2 Analytics?
I do not think that is the most useful question because they are designed for different purposes. H2 Analytics provides formal standards-compliance testing and certification for eligible hydrogen-water products. H2HUBB provides broader product evaluation, approval, consumer guidance, and marketplace visibility. For many quality hydrogen-water products, pursuing both can provide complementary value.
Sources & Further Reading
- H2 Analytics — IHSA Product Certification
- H2 Analytics — Gas Chromatography
- International Hydrogen Standards Association — Certification Criteria
- H2HUBB Standards Framework
- H2HUBB Product Performance Standards
- H2HUBB Certification & Approval Pathways
- Unisense Hydrogen Microsensor: How H2HUBB Tests Hydrogen Products
- H2HUBB Independently Tested / IHSA & H2 Analytics Product Collection
- Piurify Hydrogenator Bottle — H2HUBB & H2 Analytics Test Reports