P-I, P-IA(BNC), P-II, P-III(ATC) Hand-held pH MeterRange:0 to 14 pH,Accuracy: +/- 0.1 pH,Resolution:0.1 pH,Temp. C: To 50 C,Calibration: Two-point at 4.01pH and 6.86pH,Battery Life: DC 4 x 1.5V

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Zds- ec pen check wrRange:0.00-19.99 ec(ms/cm),Resolution:0.01 ec,Accuracy: +/- 2% full scale,Battery life: Dc4 x 1.5v,Temp. C:5--50 c (atc),Features: Automatic switch-off function: After 10 minutes w

Mini ppm testRange:0 to 1999 ppm (mg/l),Resolution:10 ppm (mg/l),Accuracy: +/- 2% ppm (mg/l),Battery life: DC 4x1.5v,Temp:5 to 50(atc),Mini ppt testRange:0 to 10.00 ppt,Resolution:0.01ppt,Accuracy: +/

PH-900 Mini pH TesterRange:0.0 to 14.00 pH,Resolution:0.01 pH,Accuracy: +/- 0.03 pH,Temp. C:0 to 50C(ATC)Calibration: Two-point at 6.86pH and 4.01pH(or 7.0pH and 4.01pH)Battery Life: DC 4 x 1.5V

Ph-902 pen phtestr wpRange: 0. 00 to 14. 00 ph,Resolution: 0. 01 ph,Accuracy: + / -0. 03 ph,Temp. C: 5 to 50c, (atc)Calibration: One point at 6. 86ph (or 7. 0ph)Battery life: DC 3 x 1. 5vRS-100A Nutri

PH-I, PH-II(BNC), PH-III(BNC+Cable) Pocket pH MeterRange:0 to 14 pH,Accueacy: +/- 0.1 pH,Resolution:0.1 pH,Temp. C:5 to50 C,Calibration: Two/point at 4.01pH and 6.86pH,Battery Life: DC 4 x 1.5V

PX-I, PX-IA(BNC), PX-II, PX-III(ATC) Mini pH MeterRange:0 to 14 pH,Accuracy: +/-0.1 pH,Resolution:0.1 pH,Temp C:5 to 50 C,Calibration: Two-point at 4.01pH and 6.86pH,Battery Life: DC 4 x.5V

ZD-05 SOIL PH AND MOISTURE TESTERRange: pH: 3-8 pH ; Moisture: 1-8Notes: Soil pH value is a very important factor for the quality of crops. Most of crops cannot survive in too acid or too alkaline soi