i have a static tank outside.checked tds going into tank was just 002.
Filled my tank in the van and tds in my van is 20.
So i emptied my static and started filling again.
Tds from ro is still 002.
Fill a bottle and its 018.turned meter off and tried again still 018.
Fill 2 more bottles and 002.
Its a new tds meter about a month old.
Any ideas why this is?