HM Digital 20 pack mix of 1000 ppm TDS pH 4 pH7 pH storage solutions reflective-and-greenhouse-films Watch our video tutorial for

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low profile engineering allows it to be equipped in low clearance

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Versatile Application: Suitable for hydroponic systems (excluding recirculating systems)

SYMBYS StashBags Commercial Grade Oven Bags can be used for short or long term use

HM Digital 20 pack mix of 1000 ppm TDS pH 4 pH7 pH storage solutions reflective-and-greenhouse-films Watch our video tutorial forDescription 20 Pack Assorted Solutions (5) 20 ml packets pH 4 buffer (5) 20 ml packets pH 7 buffer (5) 20 ml packets pH storage solution (5) 20 ml packets EC TDS calibration solution