Profile: Martek Instruments, Inc. manufactures portable environmental water quality analyzers. Our products are ideal for monitoring high purity water environments such as nuclear and fossil fuel power plants, condensate polishing systems and demineralizers, semiconductor and pharmaceutical manufacturing plants, and other industrial applications. Our Martek Mark™ 20 is an eight-channel, multi-parameter water quality system used by numerous nuclear plants. Martek Mark™ 22 calibrator is a precision conductivity and pH analyzer in one, small portable analyzer.