Digital PH meter with ATC PH test pen Acidity meter pH tester Water quality test pen Accuracy 0.1pH portable PH meter blacklight

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1

1

-6%

Portable ph-990 ph meter digital water quality analyzer with backlight pen-type meter tester

1

2

-2%

Incomplete data

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0

0

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2

1

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0

2

-5%

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1

1

-2%

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1

1

-3%

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0

0

-10%

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1

3

5.0

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0

0

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0

0

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0

-1%

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0

-0.9%

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1

1

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0

0

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5

6

3.6

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1

2

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1

2

4.0

-2%

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0

1

-3%

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0

0

-4%

Incomplete data

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0

-0.3%

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0

0

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0

0

-0.4%

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2

3

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0

0

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0

1

-0.1%

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0

0

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0

3

-2%

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1

0

-3%

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0

2

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1

0

-4%

Incomplete data

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1

0

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0

0

-2%

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2

2

-7%

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0

0

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0

-0.5%

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0

0

-4%

Az8692 handheld laboratory ph meter portable ph written tester pen water quality monitor ph meter 0.00-14.00 ph tester

0

0

Rz ph meter tds monitor with temperature meter digital water quality tester pen ph/tds meter for pools drinking water aquariums

1

1

Incomplete data

Digital ph meter aquarium hydroponics laboratory water quality tester atc backlight display high precision acidimeter

0

0

Portable ph meter acidity tester high accuracy bnc replaceabe probe sensor electrode atc 0.05ph rugged durable 9v battery

0

0

-3%

Incomplete data

Digital ph meter ph tester 0.01 ph high accuracy water quality tester with atc: 3 in 1 ph tds temp pocket size for household

0

0

-1%

Yieryi aquarium ph meter with high accuracy temperature compensation atc portable backlight ph meter ph tester 0-14ph

0

0

-2%

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0

0

-1%

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0

0

Rz ph meter monitor aquarium digital professional water quality tester analyzer for swimming pool acidity meter ph monitor

0

0