HM Digital pH 7.0 Buffer Solution, 20 ml sachets, box of 20

HydroFarm

HM Digital pH 7.0 Buffer Solution, 20 ml sachets, box of 20[ HMDPHP7 ]

$15.92 $25.00

20 ml pack of pH 7 buffer solution will you calibrate your probe to neutral.  Do this before calibrating to 4 pH.



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