Nitrogen in laboratories
Labs use nitrogen as a supply gas, instrument gas, carrier or balance gas, and cryogen. Suitability depends on analysis, purity, pressure, and equipment.
Cylinders and instruments
Compressed cylinders and fixed supplies are pressure systems. Regulators, compatible connections, secure storage, labels, and supplier safety data matter. Instrument purity must match the method.
Carrier gas and cryogen
Nitrogen can protect selected samples or serve instruments where validated methods specify it. Liquid nitrogen requires compatible vessels, ventilation, training, and controls against cold contact and oxygen displacement.
Sources and further reading
These references are starting points. Check the source directly for definitions, dates, units, and context. This is an educational overview, not an operating manual or professional advice.
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