I am sure the information is here somewhere, but I cannot find it.
I have just started to refill my cartos (510 on a Blu Premium 100s battery). My question is simple - when is it time to replace the carto with a fresh one?
Thanks.
I have just started to refill my cartos (510 on a Blu Premium 100s battery). My question is simple - when is it time to replace the carto with a fresh one?

Thanks.