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Calibrating EC/ppm meter

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Old 06-21-2010, 12:08 PM
veggiemuffin veggiemuffin is offline
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Join Date: May 2010
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Default Calibrating EC/ppm meter

I bought a multi meter from a hydroponics shop that doesn't seem to have anything written about it online and the instructions that came with it are minimal. It's a EC-1385 meter. Does anyone have this one?

The instructions say to calibrate it in 12.88 EC solution then in 1.41 EC solution. I found the 2 solutions online and have them now but it seems crazy to try to get the meter up to 12.88 EC. The meter hardly moves at all when I turn the screw. Has anyone done this?

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Old 08-09-2010, 11:57 PM
watercatwn6535nd watercatwn6535nd is offline
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Join Date: Jan 2010
Location: washington state
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Send a message via Yahoo to watercatwn6535nd

try the Hanna web site

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