Portable Dissolved Oxygen Meter,Aquarium Water Test Kit,Dissolved Oxygen Test Kit Dissolved Oxygen Meter Easy Calibration,Easy 100% D.O value calibration,oxygen analyzer supports single-point or dual-point dynamic calibration. The instrument calibration is simple, make sure the probe is installed correctly before calibration One-point calibration: (can meet normal use) 0.0% (oxygen-free water) or 100.0% (air) Two-point calibration: 0.0% (oxygen-free water) and 100.0% (air) are calibrated simultaneously 1. 100.0%-Calibrate after the value is stable in the air under the power-on state, press and hold the CAL button for 5 seconds to release the button, the screen flashes 100.0%, the flashing is completed, and the calibration is completed. 2. 0.0%-Calibrate after the value is stable in anaerobic water under the power-on state, press and hold the CAL button for 5 seconds and release the button, the screen will flash 0.0%, the flashing is completed, the calibration is complete When oxygen analyzer measuring and calibrating, needn't open the protective cover of the electrode, just put the electrode in the solution for measurement. Oxygen is dissolved in water through the surrounding air,air movement and photosynthesis.No need to open the electrode protection cover duringMeasurement and calibration put the electrode directlyinto the solution to measureThe oxygen analyzer electrode should be calibrated in air, with air as the standard point of 100% saturated dissolved oxygen.As the electrode consumes oxygen, the oxygen concentration on the probe surface drops instantaneously, so it is important to stir the solution during measurement. Dissolved oxygen meter instructions for use Connecting electrode and press the power button When the machine is turned on will display the temperature of mg/LShot press the HOLD button to lock the value, long press TEMP button to switch "C or "FShort press the MODE button,Switchable me/L or %Long press the CAL button to calibrate in the air. The screen displays 100.0%.After the flashing is completed,the calibration is successful. if calibrated in anaerobic water 00% is displayed Dissolved oxygen meter the film inside the protective cover cannot be taken apart. HD backlight display,Clearer and Clear reading at night.High sensitive probe,Metal knob allow the probe to be attached and tightened tighter,Not easy to fall off.Battery compartment,Powered by 3 * 1.5 button battery, for long life. Dissolved oxygen test kit equipped with 6 easy to replace probe protective covers,anaerobic water and calibration powder. Probe protective coverHighly Sensitive ProbeDetachable probeeasy to replaceEquipped with 6 probe protective covers The application of dissolved oxygen meter is very extensive:Aquaculture,Biological reactions,PondsAquariums,Swimming pools,Teaching experiments, Laboratory sterile environments,Scientific research,Environmental testing (Lakes, Streams, Oceans),Wastewater treatment, Wine production and other fields.