Looks like I'll have to call them by their comersail name of Nalgene 10, 20 and 45L polypropylene screw top containers,
it's just a bit of a mouthfull.
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They are Nalgene??
Nalgene make seriously expensive plastic water bottles, for hill walking and climbing and the like.
They are virtually indestructible, and the plastic doesn't taint the water.
I wonder would it be possible to melt one down and make a water bottle out of it?
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They're seriously expensive chemical containers, £134 for the 45L ones,
needless to say I'm don't pay anything close to that,
well, I don't pay anything for them.