DI 1000 TOC analyzer is a high performance testing analysis instrument, with independent intellectual property rights by Tailin. It adopts dual wavelength ultraviolet nano-catalytic oxidation method, with its oxidation capacity increased over 100 times than traditional single-wavelength ultraviolet oxidation. It is of high sensitivity, excluding the influences of catalyst or carrier gas import impurities. It meets the latest requirements of "United States Pharmacopoeia", "European Pharmacopoeia" and "Chinese Pharmacopoeia", and it can be widely used to measure the organic carbon contained in ultra-pure, pharmaceutical water, drinking water, bio-chemical products, etc.