Taylor-Wharton LX-230 Cryogenic liquid cylinder, all stainless steel construction, Capacity: 230 liters liquid - equivalent to ~4,700–5,000 ft³ gas (N₂), Performance: Normal evaporation rate (NER) ~1.2–1.5% per day for N₂, Pressure: DOT-4L 200 PSI MAWP.