CALL: A.WIHARTA 081294124885 085778084789 087784022201   Info Produk Optical DO provides fast and stable response with no maintenance Excellent performance in low-oxygen conditions No membranes or electrolyte to replace DO probes can be stored wet or dry No flow or stirring requiredâ € ” sensor does not consume oxygen The easy-to-maintain Thermo Scientific Orion Star RDO meters offer the convenience and increased accuracy of optical DO measuring technology. Meter provides automatic temperature, and salinity and barometric pressure compensation for mg/ L ( ppm) or % saturation. Meters are IP67 rated for waterproof applications. These portable meters can store up to 10 password-protected methods and calibrations. Store up to 1000 data points with GLP-compliant time-and-date stamp. Download data to a printer or computer with the optional RS-232 or USB cable. Meter only includes: Quick-Start guide and four AA batteries. Meter kit includes: RDO probe with stainless steel guard and optical sensor cap.