>>1074594>How long gas lastsAs usual, it depends on the stove and the pots etc. Some are more efficient than others.
Example (I have a Primus so have looked into it more): Primus Easy Fuel Duo burns for ca. 70 minutes with a 230 g gas bottle. With a PrimeTech/Eta pot (has a heat exchanger at the bottom which improves efficiency) it's about 2 minutes 50 seconds to boil a litre of water, 1 minute more with another type of pot. This time grows the higher in altitude you go and the colder it is and so on.
So, 70 minutes/container / 2.833 minutes/litre = 24.7 litres/container.
Or, for the autists, you boil 1 l of water daily, a 230 g container would last 24 days 16 hours 56 minutes 28 seconds IN THE REFERENCE altitude and temperature using the given gear.
Other 3 kW Primus stoves exhibit similar numbers.
The boil time increase when going up very high (air is thinner, colder) or it's winter. Let's say the time-to-boil is doubled, this means, roughly, you can expect 2 weeks of "one litre a day" from a 230 g container innamountains (but not K2/Everest levels).
Other anecdotal real-life numbers I've seen for a gas Trangia 27 are 15 g/gas per litre of water during the summer in the fells of north Sweden.
A rough rule of thumb: 1 week per 100 g of gas.
Just boiling water takes the least gas, cooking takes more. With freeze dried food you don't really need full boil, almost boil is well enough (assuming water is purified already).
I hope this answered your question anon.
