Why switching to On-Site Hydrogen Leads to Better Results

Posted on: 15 Mar, 2013   |   With: 0 Comments
Category:  Gas Generation, Hydrogen

Our Principals – Proton OnSite (USA) have published a very useful article pertaining to use of Hydrogen in laboratories it’s on-site production. We are reproducing this article verbatim and also providing a downloadable article for our audience and customers.

Laboratory practitioners need a carrier gas they can count on. But helium ? traditionally used as a gas chromatography (GC) carrier gas ? supplies are dwindling, forcing laboratories to pay more and risk a missed delivery of this ever more scarce gas.

Laboratories are increasingly looking for a more reliable and less expensive solution than helium gas. The only carrier gas that can offer higher reliability and lower cost ? plus faster results ? is hydrogen, made on-site. A hydrogen generator using a Proton Exchange Membrane (PEM) electrolyzer safely and reliably produces an endless supply of ultra-pure hydrogen at a fraction of the cost of delivered helium.


Hydrogen carrier gas offers the fastest GC results. The van Deemter equation, which predicts the optimum speed at which there will be the least variance per unit column length, shows that hydrogen?s flow rate can be greater than helium?s. The equation also proves hydrogen can just as efficiently separate peaks.


Not all hydrogen options are created equal. Laboratories that use cylinders of hydrogen gas struggle with storing potentially explosive cylinders and the added expense of complying with strict safety regulations. Generating hydrogen gas on-site is a safer option. A single, standard hydrogen cylinder storing 6,300 liters of gas has the explosive potential of 35 lbs. of TNT, while a Proton OnSite hydrogen generator contains less than three liters of hydrogen gas at any given time.

Because a Proton OnSite hydrogen generator contains drastically less hydrogen, it is incapable of creating the four percent hydrogen/air mix necessary for a space to become explosive. Even if a Proton?s largest ?lab server? scale (19 SLPM) generator is left unchecked ? accidentally or otherwise ? a lab space would remain safe.


Generators are ideal for laboratories that need to provide carrier gas to multiple systems at the same time. Laboratories that use cylinders to support multiple systems can be logistically challenging, particularly when cylinders are shared across departments. Generators, on the other hand, can act as a hydrogen gas server, using a single generator to run several systems.


Proton OnSite?s generators use advanced hydrogen gas purification, ideal for applications that need an ultra-pure carrier gas. GC applications, for example, analyze samples to such a high degree that even the smallest contaminant will affect results. An on-site generator using Proton?s advanced gas purification ensures the hydrogen gas is 99.9999 percent pure, enabling the hydrogen carrier gas to produce superior results.


Proton OnSite?s hydrogen generation systems use a platinum catalyst and Proton Exchange Membrane technology to split deionized water into its constituent parts.

When a DC voltage is applied to the electrolyzer, water molecules at the anode are oxidized to oxygen and protons, while electrons are released. The protons (H+ ions) pass through the PEM to the cathode where they meet electrons from the other side of the circuit, reducing to hydrogen gas.


Proton OnSite has more than 15 years of expertise creating commercially successful hydrogen generators. The world?s largest supplier of hydrogen gas generators has deployed its technology on every continent in a variety of environments, from refueling stations and military bases to power plants and semiconductor manufacturing facilities.

Ongoing research and development efforts have resulted in reliable systems that have evolved from military and aerospace platforms to produce ultra-pure hydrogen to support critical commercial missions. The expertise and experience Proton OnSite brings to its generators ultimately gives laboratory practitioners a carrier gas that?s pure, safe, inexpensive and produced at the flick of a switch.

Download the article in PDF here.

About MVS Engineering Limited

MVS Engineering is a turnkey supplier of Gas generation equipment, Air and liquid drying equipment. MVS was founded in 1977 and has supplied nearly 7000 Skid mounted units worldwide. Read more about the company in the About Us section of our website.

Specifically for Proton OnSite’s products, MVS is Proton’s engineering partner in India for sales, service and turnkey supply of engineered solutions. Whether you require a single Hydrogen Generator or a complete Hydrogen solution including compression, bottle filling etc., MVS is your one stop provider.

About Proton OnSite, USA

Proton Onsite designs and manufactures Proton Exchange Membrane (PEM) electrochemical systems to make hydrogen from water in a zero pollution process producing safe, pure, reliable onsite hydrogen to meet today?s global hydrogen requirements. Proton has been developing and manufacturing world-class electrolysis systems since 1996, with thousands of units deployed world-wide, on every continent. With a reputation for building robust, reliable, and safe systems, federal, state, and commercial partners repeatedly seek the creative solutions that Proton OnSite has proven it is capable of delivering. For more information,

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