Hi
Please read the post iam helping someone else start. I have loads of tds meters.
The guy is new and is working out his costs to,start . If he can't buy all he needs its pointless buying
Anything at all.
If the tds is around 60 he can manage on DI if it's in the 100,s he will need RO. Just trying to help
Him with his kit list.
If he goes for it of course he will need his own tds.
John