Hi all. I use a Zero Water Pitcher for my espresso water, to which I add sodium bicarbonate, using @Rob1 s suggested water recipe. Unfortunately I have not tracked the quantity of water run through it. As I only use it for espresso water (espresso shots plus machine flushing), the quantity run through it is not substantial. However I have been using it for 3 to 4 months. The TDS reading just reached 8 on one TDS meter (the one that came with the pitcher) and 12 on another, compared to 4 but 2 weeks ago. Zero says to change the filter at 6 TDS, so I guess that it’s time.
If you use a pitcher, what metric do you use to determine when to change it?
As I do not use alot of water, a full or partially full pitcher can sit on the counter for a couple or few days. I have not been emptying and refilling the pitcher for each use, unless I need to add water. I use the water that is there? Should I?
And … should I keep it in the refrigerator?
Additionally what do you do when you are away for a couple or few weeks? Do you replace the filter upon your return?