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HP-1 NPK + pH Testing Kit


An abbreviated version of the AM-41 model. This kit offers tests for pH and three key nutrient factors: nitrogen, phosphorus and potassium. 

It enables you to maintain proper nutrient balance between the three major nutrients and to achieve optimum growing conditions in soil-less cultures and in sandy soils.

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pH 4.5-8.0

Nitrate Nitrogen 5-200 ppm*
Phosphorus 3-30 ppm
Sulfate 0-200 ppm

0-250 ppm


*By dilution