This tube is designed primarily for the following gas and range. Some tubes may be used for additional gases. Please reference the specification sheet for complete details of all compatible gases for this tube.#281 Iron (II) Ion 5-50mg/l
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Detector tubes for dissolved substances in solutionTo measure, simply immerse the detector tube in a sample of liquid (placed in a beaker or other container). Anyone can measure concentrations quickly, easily and accurately on site.
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