A hiker I met on the Shepard Pass trailhead had one of those gravity powered filters.
We stopped at the next creek location after the 4 creek crossings going up.
He was almost empty.
It took about 15 minutes to fill up his bladder... not the rate of 2 liters per minute.
We rested in the meanwhile.
I'm thinking the filtering rate is irrelevant if it does the job.
However, he had issues on how he would get that bladder back into his packing configuration... thinking it was too complicated.
Last edited by futbol; 09/18/20 07:48 PM.
