TDS meter ?s

[Samper]

Well my RO/DI came in today and it's much more complicated than the ebay unit. It's leaking in a few places and actually is right at freezing outside now so I can't really test it out and fix things until tomorrow when it's warmer. If any of you have an RO from Buckeyefieldsupply please let me know cause this evening I can't get ahold of Jeff and I have a few questions.

My questions for you guys are about my hanna tds meter. It came with a card that says it was calibrated. I'm not so sure now. The booklet doesn't give a temp at which it can be used so I tested cold tap water, and even colder water from the refrigerator which is supposed to be filtered.
First test tap: 067
First test fridge 081
Second test tap 084
Second test fridge 086

Either it needs to be calibrated, temps need to be consistant or the fridge filter needs changing. Any ideas? I have some calibration fluid but if it's been calibrated already I don't wanna use it.

[Reefland]

That's interesting Samper. I think it might be best to go ahead and use the fluid to calibrate now; if nothing else at least you can exclude that after future tests.

[Samper]

Does temp matter with the tds meters?