HS-1123, an 4-page illustrated fact sheet by Robert C. Hochmuth, Eric H. Simonne, Lei Lani L. Davis, and Wanda L. Laughlin, describes the use of quick test in hydroponic green house herb production. Includes figures to help identify the plant parts used for analysis in basil, cilantro, dill, mint, and oregano, references, and a table of typical nutrient ranges. Published by the UF Department of Horticultural Sciences, November 2007. http://edis.ifas.ufl.edu/HS372