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or 1 cup (8 oz) per 4x4 ft of surface Tea / Foliar Rate 1–2 dry tsp per gallon of water
because a fresh packet goes in at fill and the card would only ever be read downstream
and reach target RH within 24 to 48 hours in a sealed container
Screw Hole Size
Sensorex pH Sensor J&D Manufacturing or 1 cup (8 oz)Reading pH with the Growlink Sensorex pH Sensor The Growlink Sensorex pH Sensor reads 014 pH on a 12 mm Ultem body electrode designed for samples where contamination would foul a single junction probe. The double junction reference design isolates the Ag AgCl reference cell behind a second junction filled with KCl. Heavy metals and organic compounds have to migrate through both junctions before they reach the reference wire. That extra barrier extends
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