• Hydrogen >99.9 [%]
• Nitrogen and Argon;1 [%]
• CO and CO₂ <4 [ppm]
• Methane <1 [ppm]
• Oxygen <1 [ppm]
• Moisture content <3 [ppm]”

Hydrogen is used for the synthesis of basic products in the chemical industry, such as: hydrogen chloride, methanol, synthetic petrol, ammonia, and for the organic syntheses of hydrogenation reactions. It is also used in welding technology, glasswork and metallurgy.

• Requirements for storage structures:
• Local exhaust ventilation, and general room ventilation,
• Protection against static electricity,
• The sprinkler system to cool down cylinders with sprayed streams of water in case of fire,
• The electrical, lighting and ventilation installations made in the EX standard,
• The room should be cool and dry.

• Storage is only allowed in storage facilities allocated for storing extremely flammable gases,
• Keep in pressure containers (cylinders) which meet the requirements of Technical Supervision, vertically; cylinders must be protected against falling down,
• Keep away from sources of heat and ignition,
• Whilst in storage do not allow the temperature to exceed 50°C,
• Keep away from oxidising gases and other oxidising substances,
• Store containers / cylinders should be tightly closed,
• The stored containers should be checked regularly for general condition and leak-tightness,
• Store and open containers carefully. HYDROGEN STRONGLY HEATS UP DURING DECOMPRESSION, WHICH MAY RESULT IN SPONTANEOUS IGNITION,
• Containers and tanks must be properly marked,
• Containers must not be stored under conditions which are conducive to corrosion,
• Portable fire extinguishing equipment should be available in the room.
• “No smoking and no open fire” signs should be placed in the storage areas