PH and PPM Pens

Bluelab Conductivity Pen (PPM Pen)
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$97.00
$87.30

Bluelab Conductivity Pen (PPM Pen)

Bluelab

  Bluelab Conductivity Pen Product Features / Benefits Fully waterproof, not just water-resistant Selectable measurement units so you can...

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$97.00
$87.30
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Bluelab Grower's Toolbox
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$213.00
$191.70

Bluelab Grower's Toolbox

Bluelab

  Bluelab Grower's Toolbox Product Features / Benefits Your toolbox contains: Bluelab pH Pen, Bluelab Conductivity Pen, Bluelab Gro...

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$213.00
$191.70
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Bluelab pH Pen
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$116.00
$104.40

Bluelab pH Pen

Bluelab

  Bluelab pH Pen Product Features / Benefits Fully waterproof - not just water resistant Simple two-point calibration process for accur...

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$116.00
$104.40
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Bluelab Soil pH Pen
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$191.00
$171.90

Bluelab Soil pH Pen

Bluelab

  Bluelab Soil pH Pen Product Features / Benefits Effective in most growing media and in water/solution Fully waterproof - not just w...

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$191.00
$171.90
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