pH/ORP Meter Calibration Solution Buffer Solutions Tester

How to Calibrate the pH Meter1. Rinse the electrode with clean water and wipe it dry. Turn on the pH meter and adjust to pH mode.br 2. lmmerse the electrode in the pH buffer solution and wait for the reading to stabilize. Press and hold the CALbutton for 5 seconds the screen will display CAL and the pH calibration is complete when pH flashes 3times.br 3. Rinse the electrode with clean water and wipe dry.br 4.Repeat the above calibration steps to calibrate pHbr How to Calibrate the ORP Meter1.Press ON/OFF button to turn on the meter, the protective cap and rinse off the probe with pure water and dry it.br 2. Press the MODE/CAL button to set the ORP mode the word mV will be displayed at the right of the screen. Put the probe into 222mV calibration solution and shake it gently.br 3. Wait until the reading is stable, then long pressMODE/CAL for 5 seconds and release CAL is displayed on the screen, then a value will flash 3 times on the screen, when the value starts to fiash, press MODE/CAL button lf the flashing value is higher than 222mV or HOLD/TEMP button lf the flashing value is lower than 222mV .br 4. After adjusting the displaying value to 222mV then release the button, waiting the reading stop flashing,the calibration is finished, rinse off the probe with water.br Storagebr Buffer solutions should be stored in a dark, cool place not in the refrigerator and at temperatures no higher than 25C away from direct sunlight to prevent photochemical degradation. In addition, buffer calibration solutions should be protected from carbon dioxide from the air and stored in tightly closed containers.br ColourAs Shownbr Materialplasticbr typePH and ORPbr Package Contentsbr 1 set x pH Meterbr Only the above package content, other products are not included.br Note Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.