Why the Most Official Water on Earth Costs $120,000 a Gallon

The most official water costs $120k a gallon

Not all water is identical because hydrogen and oxygen atoms have different isotopes. To ensure precise temperature measurements, scientists established Vienna Standard Mean Ocean Water, or VSMOW, as the global reference. This specific mixture is so rare and critical for calibrating thermometers that a single 5 ml ampoule costs $159, translating to an astonishing $120,000 per gallon.