2PCS Digital Hydroponics EC Conductivity Meter Water quality tester hardness tester Conductivity Tester Pool SPA Aquarium

-15%

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1

2

5.0

-23%

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1

-1%

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1

1

-0.8%

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0

-3%

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0

-12%

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1

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2

0

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0

-4%

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-22%

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1

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-0.7%

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0

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1

2

5.0

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0

-22%

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-3%

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-0.9%

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2

1

-8%

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0

-6%

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1

2

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1

-6%

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-3%

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-2%

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-3%

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0

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2

1

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-2%

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1

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-0.8%

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1

1

5.0

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0

0

Yieryi ec-316 direct soil ec tester atc 0-4.00 ms/cm digital lcd aquarium swimming pool hydroponic laboratory conductivity meter

7

1

-0.3%

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1

0

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1

1

-5%

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0

-2%

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1

-4%

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0

-0.7%

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0

0

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1

0

-2%

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2

0

-2%

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-4%

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-6%

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0

-0.1%

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-19%

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-10%

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0

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4

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4.5

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-53%

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0

1