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A Capacity Indicator for Hydrogen Getters Imagine a hydrogen getter that tells you how much protective life it has left, simply by changing color, so engineers can read remaining capacity at a glance without ever opening the sealed device it guards. GetterGauge pairs that built-in gauge with a level of selectivity most getters cannot match, pulling hydrogen out of a sealed space while ignoring the helium, nitrogen, argon and methane around it and continuing to work. even at pressures a thousand times below atmospheric. Underpinning the color-change readout is a material that holds up to roughly three times more hydrogen than fielded products, works from below freezing to well above the boiling point of water, and needs no activation step before use. Because the material is friendly to plastics and polymers, it can be shaped to fit the device rather than forcing the device to fit the getter, opening the door to smaller, longer-lived and lower-cost sealed systems across electronics, medicine, aerospace and energy. Challenges Sealed and vacuum systems fail early when hydrogen accumulates inside them, because hydrogen corrodes metals, embrittles structural parts and can build toward a dangerous release. Getters exist to prevent that outcome, yet the versions on the market carry a stubborn set of limitations: The best ones store only about 350 cubic centimeters of hydrogen per gram, perform within a narrow temperature window, generally demand a separate activation step, lack selec

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