This pH calibration solution from Growth Technology is perfect for all your hydroponic needs. With a 300ml bottle of Buffer 4 and Buffer 7 pH Meter Calibration Fluid, this liquid is ready for use straight out of the box. Made with mineral material basis, this pH solution is compatible with all plants. This product is a must-have for any hydroponic setup, and with its high-quality performance, it is sure to provide the perfect pH balance for your plants.
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