I tested the CB this way, it was stored the last 24H at 12*C, and I noticed that the cup in which I poured the water via the drinking tube, has a very slight plastic taste.You could fill the camelbak with bottled spring water to make a control, and you could sample from
- the bladder direct into a cup
- the bladder into a cup via the plastic drinking tube
- spring water direct into the cup from the same bottle as used to fill the camelbak
The cup in which I poured the water directly out of the CB bladder has the same taste as the water from the control cup.
Of course I'm not a scientist, nor I have very top of the bill equipment, Only my tastebuttons Mk1 in my mouth. )
I'll continue this test with hot water.
Personally, I find the results very odd, I really remember the plastic taste, maybe it has to do with the temperature?