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kH - I have Elos, LaMotte and API - all test exactly the same, except LaMotte gives a touch better resolution.
Not sure if it's 'high end'. It's the one that costs about $20 from PA.
I use the Elos or API to do fast checks, since it's easy and quick. I use LaMotte when I sit down once a month and test everything.
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..no vemos las cosas como son las vemos como somos nosotros...
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