Hydroponics 4-Way Test Kit Order Code# 3561-01
Allows the hydroponic hobbyist to maintain proper nutrient balance of nitrogen, phosphorus and potassium to achieve optimum growing conditions in soil-less cultures.
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Macronutrient Plant Tissue Test Kit Order Code# 5026-01
These simplified field tests for green plant tissue indicate whether growing plants are receiving adequate amounts of available nutrients from the soil. All tests give qualitative results for the specific nutrients.
Micronutrient Plant Tissue Test Kit Order Code# 5261-01
The Plant Tissue Macronutrient Test Includes tests for ferrous and ferric iron, zinc, copper, manganese, and boron. Each test is made from the sap of plant tissues, which is extracted by squeezing the tissue with pliers.
Plant Nutrition Studies Order Code# 5940
Contains 10 stock solutions of macronutrients and trace elements; sufficient to prepare five liters of each mixture. Includes Plant Nutrition Studies handbook.