The use of ion - selective electrodes in NFT systems Authors Heinen, M. Publication Date Jan 01, 1990 Source Wageningen University and Researchcenter Publications Keywords Cultivation Cultural Methods Electrodes Hydroponics Liquid Fertilizers Nutrient Film Techniques Cultuurmethoden Elektrodes Hydrocultuur Teelt Vloeibare Kunstmeststoffen Voedingsfilmsysteem Language English License Unknown External links Full record on research.wur.nl