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A highest quality of unique Spectrometric Analyzer to measure desired parameters such as COD, BOD, TOC, Chromium, arsenic, AOX, DO2, TSS, Turbidity, Nitrate, BTX, Color etc. as per the standard method directly. benzoquinone in 500 ml of water to get 500 ppm of carbon and further dilute and analyze with water to get final concentration 500 ppb of carbon and analyze solution as a sample.