TDS meter

Anyone in South King County or North Pierce happen to have a TDS meter I can get some water checked with? I'm picking up a used RO/DI filter tomorrow, and I want to check the output to see if I need to replace any of the parts.

I dont have a hand held meter, but what I would suggest is checking out these places and buy all new filters and an inline TDS meter.
Also get an auto shut off valve if it didnt come with one and a float valve so you can set up an auto fill system to fill up a large container so you have water on hand at all times. You never know when you have to do an emergency water change.

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Well I'll be using the hose faucet outside my front door, so I won't need an auto shut off as it'll only be running when I'm home. My plan is to keep about 5gal of RO/DI water on hand for the 10g, then once the 40 is up I'm planning on keeping at least 20g on hand for emergency purposes.

I have one , but i am in South Tacoma.

I'm actually thinking of just buying a new one. I started thinking about it and adding up the cost of the filter $50 + gas + new filters and meter would probably come out to the same, or more than buying a new one XD