เครื่องวัดค่า ph + ซองสอบเทียบ 2 ซอง

This PH Meter is ideal for Aquriums, Aquacultures, Bevereges, Fish Hatcheries, Food Processing, Laboratory, Paper Industry, Swimming Pool, School & colleges. Measuring pH Range: 0.0 - 14.0 pH Resolution: 0.1 pH Accuracy: ?0.1 pH (at 20?C/68?F) Operating Temperature: 0 - 50?C (32 - 122?F) Calibration: manual,1 point life:approx.700 hours of use Power by:3pcs AG-13 button battery(included) ON/OFF power switch