Complete function To meet your various needs: Widely used in water quality testing, environmental protection, pharmaceutical research and other fields. 99 data storage Test and see: The instrument comes with 99 data storage, which can save data in real timeNo need to copy,convenient multi-pond, multi-day data comparison. Three point calibration automatic recognition Rapid verification: There are three calibration modes for PH measurement of water quality: 4.00,6.86 and 9.18 Automatic buffer recognition, easy calibration. Highly sensitive probe Faster and more accurate Accurate and fast measurement, responsive The response speed and accuracy are much higher than that of ordinary sensors Color: As Shown Material: plastic Package Contents: 1 x Portable pH meter Kit Only the above package content, other products are not included. 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.