PH tester PH-900

nitrogensalinityfor environmental analysis

Features: pH： *Multiparameter water quality meter is equipped with a 6.5 inches backlit LCD display 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers. *Automatic electrode diagnosis shows the pH slope and offset. ORP: *1 point offset calibration allows adjusting the displayed value to a known standard. *Relative and absolute millivolt modes ensure the reliable ORP measurements. Ion Concentration: *2 to 5 points calibration, including the 8 concentration points can be selected. *Direct ion concentration readout simplifies the measurement process. *Automatic electrode diagnosis shows the calibration points and slopes. *Selectable concentration units (ppm, mg/L, mol/L, mmol/L) and ionic valency. Conductivity/TDS/Salinity/Resistivity： *1 to 5 points calibration with automatic recognition for conductivity standards. *Selectable cell constant, reference temperature, TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes. *Automatic electrode diagnosis shows the calibration points and factors. Dissolved Oxygen： *1 or 2 points calibration using the air-saturated water or zero oxygen solution *Salinity and barometric pressure compensations eliminate the measurement error Other Features: *Automatic temperature compensation ensures accurate readings over the entire range. *Auto-Read function senses and locks the measurement endpoint. *Calibration due alarm prompts user to calibrate the meter regularly. *Setup menu allows setting the number of calibration points, resolution, stability criteria,temperature unit, date and time, etc.