hanna calcium checker

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    Hanna calcium checker help

    So I just got a hanna calcium checker and the instructions say I need to use distilled water. Is it ok to use RODI water? I looked around and I see that some people say it's fine while some people say it's not. Any thoughts on this?
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    New Jersey Testing Drygoods SOLD Hanna calcium check

    Calcium tester HI758 Hanna tester with extra reagent $50. Ships with paypal
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