Model NPK-1 - Soil Fertility Test Kit
From Test Kits and Portable Systems
Soil Fertility test Kit, Model NPK-1: Designed for economical on-site evaluations of soil fertility, the NPK-1 test kit provides a simple, effective way for analysts to determine nitrogen, phosphorus, and potassium content of the soil. The test kit also includes a Pocket Pal(TM) pH Tester for quick pH measurements.
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