[djjd]

my question is has it a shelf life as i have just noticed mine has lost some of it's colour

[ben]

you should test the tds comming out of the ro unit. this will tell you one of the filters will need chaging. usually change the pre-filters first and if this isnt enough then change the resin.

[djjd]

sorry ben let me re-phrase my question.i went to change my resin today and the resin i have in the container has changed colour.when i first had it was very golden/copper in colour and very shiny,today when i opened it the shine was nowhere near as prominent as it was and the resin colour itself was lighter as if it had faded.
should've posted this info first sorry

[ben]

my guess is that unless its in a sealed container then yeh it could have a shelf life. it could probably absorb moisture from the air which may shorten its life.

however, this is just speculation