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Endurance testing|Gas supply|Leak tests|Flow measurement|Joints|Mathematical calculations|Documents|Force|Performance|Electric current|Circuits|Test equipment|Chemical-resistance tests|Flanged fittings|Design|Torsion testing|3rd family gases|Gas-powered devices|Marking|Torque|Elastomers|Instructions for use|Bend testing|Thermoelectric devices|Threads|Durability|Damp-air tests|Testing conditions|2nd family gases|Scratch tests|1st family gases|Thermocouples|Pilot flames