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The Growers Depot

HM Digital® 1000 PPM CP-1000 20ml (1-pack)

HM Digital® 1000 PPM CP-1000 20ml (1-pack)

Regular price $4.99 USD
Regular price Sale price $4.99 USD
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For optimal performance re-calibrate your meters periodically with a 20 ml pack of 1000ppm calibration solution.
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