pH 4.01 Calibration Solution 20ml Sachet flowering stages Substrate Volume: 5

Substrate Volume: 5

Acid-neutral pH range – helps stabilise solutions in variable SA water sources

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pH 4.01 Calibration Solution 20ml Sachet flowering stages Substrate Volume: 5Unlock Your Pot tential with pH 4. 01 Calibration Solution 20ml Sachet Low pH calibration is critical for South African hydroponic, coco and soil growers hard water, acidic amendments or drift in recirculating systems can push readings below 5. 5, locking out iron, manganese and other micros before you see yellowing or stunted growth. The pH 4. 01 Calibration Solution 20ml Sachet provides a single use, NIST traceable buffer (exactly 4. 01 at 25 C) to