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There should also be a cheater card inside the box. It is the color card that says Mg on it. It's all done in pictures for those of us that received government schooling. Be sure to shake all reagent bottles before you use them and to rinse the vials with the water you are going to test.
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The irony of 2007 is a disgustingly fat multi-millionaire trying to tell me I need to cut back on my consumption.
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