> A single Terra filter purifies up to 42 liters of safe, pure drinking water a day, equivalent of 2 and a half plastic gallons.

Someone should tell them to check their math.

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ssl-3 5 hours ago | parent [-]

Those are plastic gallons. Plastic gallons are similar to treetalker gallons and ssl-3 gallons, in that all of these units share the property of being different compared to US gallons.

(The ssl-3 gallon is particularly strange: It isn't even a measure of volume at all.)

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SoftTalker 3 hours ago | parent [-]

Heh never heard of a plastic gallon. I was imagining a plastic gallon jug such as a milk jug.

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fastball 3 hours ago | parent [-]

Yeah, in Indonesia (and other parts of the world), the 5-gallon jug you would stick in e.g. a water cooler is called a "water gallon".

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treetalker 3 hours ago | parent | next [-]

TIL! Not the first time I've made a mistake on account of failing to detect that a different English was being used.

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SoftTalker 3 hours ago | parent | prev [-]

I assume it's a local/informal unit of measure? DDG doesn't know what a "plastic gallon" unit is.

	▲	fastball 3 hours ago \| parent [-]
		It's not really a unit of measurement but rather just what you'd call the container[1], which in turn is 5 gallon / 19L. But nobody says "My 19L water jug", they they just say "My water gallon". Since most people in Indonesia get their drinking water from these jugs, stating this filter's output in "gallon" terms is just the easiest way to communicate potential savings etc (since people pay per jug, so they think in jug terms, not in any other unit of measure). [1] https://m.media-amazon.com/images/I/61fpdmJYUuL.jpg