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The pH Testr 10 is the latest version of the Oakton pH meter. Floatable, waterproof, with a replaceable electrode. Features an auto-off and hold function. Accurately measures acidity or alkalinity of any liquid sample to 0.1 pH units.
For testing soil, mix the sample with equal amount of distilled water, and dip meter into the solution to obtain a reading. Complete instructions included.
In soil, pH extremes limit biological activity, humus formation, and plant growth. Frequent monitoring is essential, as soil pH changes rapidly during fertilization, irrigation, and even the phases of the moon.
Effective pH monitoring of spray solutions will maximize pesticide effectiveness and nutrient uptake in foliar feeds.
When used in conjunction with the ORP meter, gives a good indication of soil buffering and biological activity. Indispensable!
For accurate readings, it is necessary to calibrate the meter, using reference buffer solutions, purchased separately. The 7.0 solution (TM 356) is the best one to use for primary calibration. If accurate readings below pH 6.0 are consistently needed, the 4.0 (TM354) solution is also recommended. For best calibration and accuracy, use both the 7.0 and the 4.0 solutions.