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Juchuang B-type portable chemical oxygen demand rapid measuring instrument is specially designed by our company for monitoring and supervision personnel to measure the chemical needs of various water samples on site. Integrated smart instrument for oxygen level. Juchuang portable instrument has the characteristics of automatic temperature control, dual LCD display, AC and DC dual-use, automatic zero adjustment, direct reading of concentration, curve storage, automatic printing, etc. The instrument is easy to operate and operates interactively, so users do not need complicated professional knowledge. knowledge to apply this product.