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NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.
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Meters & Solutions
Bluelab Soil pH Pen
Bluelab pH 4.0 Calibration Solution, 500 ml, case of 6
Bluelab 2.77 EC Conductivity Solution, 500 ml, case of 6
Botanicare pH Up, 1 qt, case of 12
Bluelab Combo Meter Plus
Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter
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