Kelway Growers equipment for Crop Cultivation in New Jersey

  • Kelway - Model HB-2 - Soil Acidity & Moisture Tester

    The Kelway tester operates on the principle of electrical potential between two dissimilar metal plates - without batteries or any external power source. When inserted into moist soil the HB-2 registers degree of acidity on the upper scale. The lower scale shows degree of moisture (% saturation) when the switch button is held depressed.

    By KEL Instruments Co., Inc based in Wyckoff,, NEW JERSEY (USA).

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