Helium Knowledge Hub

Understand Helium. Use It Better.

A practical technical resource for helium buyers, MRI teams, laboratories and industry — with live conversion tools, purity guidance, storage comparisons and application knowledge.

Compare

Liquid vs Gaseous Helium

Two forms of the same element, but with very different storage, handling and application requirements.

Liquid Helium

Used where ultra-low temperatures are required, especially for superconducting systems and MRI magnets.

Gaseous Helium

Used for inerting, leak detection, pressurization, fiber optics, research and high-purity industrial processes.

MRI Helium Ecosystem

Your MRI can't wait for helium.

A quenched or low magnet is a hospital’s worst downtime. We treat MRI helium as a full ecosystem, not a single delivery — from the first litre in the dewar to the moment the magnet is scan-ready again.

Live Helium Converter

Input type Value Reference basis

Approximation used: liquid helium density ≈ 0.125 kg/L near its normal boiling point; helium gas ≈ 0.164 kg/Sm³ and ≈ 0.1785 kg/Nm³. Cylinder values are idealized nominal capacities and vary with temperature, actual fill pressure and usable residual pressure.

Liquid helium—

Helium mass—

Gas volume—

50 L @ 200 bar—

50 L @ 300 bar—

Purity

Helium Purity Grades Explained

The right grade depends on the application. Higher purity generally means tighter control of oxygen, moisture and other trace contaminants.

4.0 99.99%

General high-purity laboratory and industrial use.

4.5 99.99%

Applications requiring tighter impurity control.

5.0 99.99%

Ultra-high-purity applications such as analytical, electronics and critical process use.

6.0 99.99%

Specialized ultra-trace and research applications where extremely low impurities are required.

Safety

Helium Safety & Handling Guide

Helium is inert and nonflammable, but cryogenic temperatures, high pressure and oxygen displacement still require disciplined handling.

High-Pressure Helium Cylinders

Secure cylinders upright and protect valves from impact.
Use regulators, manifolds and hoses rated for the intended pressure.
Open valves slowly and inspect connections before use.
Maintain adequate ventilation; helium can displace oxygen in confined spaces.
Transport using approved cylinder-handling equipment.

Liquid Helium / Cryogenic Handling

Use appropriate cryogenic PPE and trained personnel.
Never block pressure-relief devices on dewars or transfer equipment.
Use vacuum-jacketed transfer lines designed for liquid helium.
Avoid skin contact and exposure to cold surfaces or cold vapor.
Ensure strong ventilation and monitor confined areas where large releases are possible.