Buy Helium Gas or Purchase Liquid Helium (He) - praxair.com

At Praxair, we deliver gas and liquid helium (He) in a variety of purities up to 99.999%. Explore the chart below to view the spec sheets and safety data sheets for our pure helium products and a few of our popular welding mixtures.

Articles Archive | Cryomech

This option gives the customers the ability to create liquid helium for their external helium circuit. Only available with our two-stage PT Cold Heads, this built-in liquefying circuit liquefies helium and directs the liquid through a VCR fitting. The helium gas enters the circuit through a fitting on the base plate. The helium is then […]

Helium - Airgas

High-pressure & Liquid Cylinders We offer helium in high-pressure gas cylinders and liquid dewars—available in a variety of sizes—to meet any and all low-volume needs. Bulk Deliveries Helium is also available in bulk gas and liquid delivery, as well as in a full range of purities and tank sizes.

Cryogenic Liquid Helium Valve - Manual & Actuated Options

Cryocomp C3000 Series liquid helium valves are manufactured in 1/2" through 1" pipe size, with a choice of body style and manual or actuated operation. C3000 Series Cryocomp Liquid Helium valves are pipe (IPS) size valves available in 1/2" and 1" weld ends.

How is liquid helium produced? : askscience - reddit

Of course, you're not going to be able to run your air conditioner down to liquid helium temperatures - there are plenty of engineering refinements along the way. You can get liquid nitrogen by pretty much that process, cycling it around and around (and running the two streams past each other in a heat exchanger), but that won't quite get you ...

Delivered Bulk Liquids (O2, N2, Ar, He, CO2, H2, N2O ...

Bulk Liquid Supply. Well-honed logistics, advanced telemetry, and a 24/7/365 response team ensure safe and timely deliveries of cryogens such as liquid nitrogen, liquid oxygen, and liquid argon - and others. Bulk Suppliers of Liquid Oxygen, Nitrogen, Argon, Helium…

Helium | Air Liquide USA

Helium is transported from sources around the world in liquid ISO containers. It is then taken to a transfill facility where it is transferred into liquid helium dewars or vaporized and compressed into high-pressure stainless steel cylinders and/or helium tube trailers.

Superfluid helium - YouTube

Aug 04, 2007· Helium becomes superfluid and displays amazing properties. Alfred Leitner video on Superfluid Helium: https://youtu.be/sKOlfR5OcB4.

LIQUID HELIUM MSDS | MsdsDigital.com | Search our SDS ...

LIQUID HELIUM MSDS | The new SDS required by OSHA are being added daily to check for a newer version of a safety data sheet search our free msds online database.

Helium - Wikipedia

Current theory explains this using the two-fluid model for helium II. In this model, liquid helium below the lambda point is viewed as containing a proportion of helium atoms in a ground state, which are superfluid and flow with exactly zero viscosity, and a proportion of helium atoms in an excited state, which behave more like an ordinary fluid.

Liquid helium - Wikipedia

The temperature required to produce liquid helium is low because of the weakness of the attractions between the helium atoms. These interatomic forces in helium are weak to begin with because helium is a noble gas, but the interatomic attractions are reduced even more by …

Superfluidity | physics | Britannica.com

Superfluidity: Superfluidity, the frictionless flow and other exotic behaviour observed in liquid helium at temperatures near absolute zero (−273.15 °C, or −459.67 °F), and (less widely used) similar frictionless behaviour of electrons in a superconducting solid. …

Helium - youtube.com

Apr 14, 2018· Earth's atmosphere is only about 5 parts per million, or 0.0005 percent, helium. Most of helium that can be used for air balloons comes from natural gas helium concentration of which can reach up ...

Superfluidity - Wikipedia

Superfluidity was originally discovered in liquid helium, by Pyotr Kapitsa and John F. Allen. It has since been described through phenomenology and microscopic theories. In liquid helium-4, the superfluidity occurs at far higher temperatures than it does in helium-3. Each atom of helium-4 is a boson particle, by virtue of its integer spin.

Helium Recovery and Liquefaction | Air Liquide

Helium Recovery and Liquefaction Recovering liquid helium Helium is a scarce resource used across a broad range of applications including magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) scanners, optical fibers and semiconductors manufacturing, space …

Liquid Helium Management Products | Cryomech

Liquid Helium Management Products Cryomech is leading the helium conservation movement with the largest selection of laboratory-scale helium recovery and helium liquefier options on the market, with hundreds of successful installations to prove it. Off-the-shelf solutions are available that can easily be configured to meet your needs. Further customization is available and Cryomech's ...

How much does liquid helium cost? | AnandTech Forums ...

Feb 28, 2012· I worked in a low-temperature physics lab where we used liquid helium extensively. The price of liquid helium depends a lot on where you are - if you are close to a production facility, you can get down to $5-6/L. In our lab, it was about $10, and it can go much higher than that.

SAFETY DATA SHEET - Airgas

Helium Section 7. Handling and storage Advice on general occupational hygiene Conditions for safe storage, including any incompatibilities Eating, drinking and …

Questions and Answers About Liquid Helium | WIRED

You put the liquid helium into the NMR and it keeps the magnet cold. Of course, it does this because some of the helium makes the phase transition from a liquid to a gas and that takes energy.

Helium | He - PubChem

Liquid helium has unique thermodynamic properties ... Refractive index 1,026, density 0.125 and is called a "quantum fluid" because it exhibits atomic properties on a macroscopic scale. Its BP is near absolute zero and viscosity is 25 micropoises (water = 10,000). He II, formed on cooling HE I below its transition point, has the usual property ...

Liquid Helium Research Dewars - Janis Research

Both liquid nitrogen and vapor-shielded dewars are available, and all dewars have been designed to minimize liquid helium consumption. Mounting flanges are available, with the style of flange depending on the size of the dewar. Following is a list of standard sizes and designs.

Helium - Gas Encyclopedia Air Liquide | Air Liquide

Helium He - Helium 4, R704 - UN1046 UN1963 - 7440-59-7. Materials compatibility. Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials to use for a gas system.

Helium Statistics and Information - usgs.gov

Subscribe to receive an email notification when a publication is added to this page.Annual PublicationsMineral Commodity Summaries

Demand & Market Fundamentals – Helium One

The current global market bulk liquid helium market is thought to be worth over US$1.5 billion, with the unit price (US$ per thousand cubic feet) rising by over in the past decade. The USA is the world's leading helium supplier with approximately 55% share of global supply in …

Helium | MATHESON

Helium Well, Big Piney, WY Helium Tube Trailer Liquid Helium ISO Container Liquid Helium Dewars at a helium transfill Helium gas can be supplied in a variety of purity grades, mixtures, and cylinder sizes Typical Helium Recovery System For reference information about cylinders, conversions, and safety, visit our Publications Library.

Strange but True: Superfluid Helium Can Climb Walls ...

Search Close. Advanced Search ... The Sciences. Strange but True: Superfluid Helium Can Climb Walls ... as a container full of liquid helium suddenly springs a leak as it is cooled below the ...

helium | Definition, Properties, Uses, & Facts ...

Helium: Helium, chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268.9 degrees Celsius. The boiling and freezing points of helium are lower than those of …

Liquid Helium Technology - 1st Edition - elsevier.com

The text ponders on microdegree temperature controller for liquid helium II bath, commercial production, storage and distribution of liquid helium, lightweight liquid helium dewar, commercial handling of liquid helium dewars, effectiveness of low temperature refrigeration for electronics, and a bulk liquid helium distribution system.