HI 9146 is a water-resistant, dissolved oxygen meter that measures up to 300% saturation or 45 ppm (mg/L) with temperature compensation and automatic calibration. It has been developed for DO and temperature measurement in water, wastewater, and applications such as fish farming. This instrument also allows altitude compensation up to 4000 m and the ppm and % saturation are both compensated for changes in solubility of oxygen in water and for permeability of the membrane as well as the temperature effect. The included polarography probe features built-in temperature compensation and removable protective membrane cover. Terms & condition: Delivery: Within one day from the date of confirmed work order. Payment: By cash or cheque in favor of “Ronex International” on delivery at the same time. Validity: This Quotation will remain valid until one month. If you need further any information, please don’t heisted just contact us, we will be helpful.