Velong MS200118 2 in 1 വയർലെസ് തെർമോമീറ്ററും PH റീഡർ യൂസർ മാനുവലും
Velong MS200118 2-in-1 Wireless Thermometer and PH Reader Specifications Model: DN pH Calibration Range: pH 6.8 Buffer Solution: Standard pH 6.86 Product Usage Instructions Calibration Process: Rinse the pH probe with distilled water before calibrating. Immerse the sensor in standard…